跟读练习: Every Common Cause of Death & How to Avoid It, Explained - 通过视频学习英语口语

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Heart disease.
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Heart disease kills nine million people every year, more than any other cause, and most of it is preventable.
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Your heart pumps blood through arteries.
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Over time, those arteries clog with plaque, a buildup of fat and cholesterol.
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Blood flow decreases.
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The heart works harder.
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Eventually a clot forms or an artery blocks completely.
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That's a heart attack.
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The risk factors are well known.
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High blood pressure, high cholesterol, smoking, obesity, diabetes, lack of exercise.
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Most people dying from heart disease had warning signs for years before the fatal event.
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Prevention isn't complicated.
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Exercise 30 minutes most days, eat more vegetables, less processed food, don't smoke, get your blood pressure and cholesterol checked regularly.
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These aren't secrets.
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They're just hard to do consistently.
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The tragedy is how predictable it is.
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Doctors can see it coming decades in advance, but people don't feel it until something ruptures or blocks.
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Stroke.
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Strokes kill six million people annually.
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Millions more survive with permanent brain damage.
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A stroke happens when blood flow to part of the brain stops.
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Either a clot blocks an artery or a blood vessel bursts.
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Brain cells start dying within minutes.
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The longer without treatment, the more brain tissue lost.
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Time is everything.
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Recognize the signs.
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Face drooping on one side, arm weakness, slurred speech.
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If you see these, call emergency services immediately.
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Treatments exist that can dissolve clots, but only within a narrow time window.
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Every minute of delay costs neurons.
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Prevention overlaps with heart disease.
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Control your blood pressure.
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It's the single biggest risk factor.
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Stop smoking.
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Exercise regularly.
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Manage diabetes if you have it.
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The scary part is the randomness of outcome.
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Two people can have identical strokes.
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One recovers fully.
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One loses the ability to speak forever.
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Now speaking of tools that can actually help you stay informed about your health, let me tell you about something I've been using.
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Chat LLM by Abacus AI.
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You go to chatllm.abacus.ai slash eyj and you get every major AI model in one place.
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Chat GPT 5.4, Gemini 3.1 Pro, Claude Opus 4.6, Grok 4.1,
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Deep Seek, all of them.
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Their Route LLM feature automatically picks the best model for whatever you're asking.
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So if you want to research symptoms, understand a diagnosis, or just learn more about any of these conditions,
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you're getting the smartest AI for that specific question without choosing manually.
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It also does AI image generation,
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video generation, presentation building, and they have a deep agent that can build entire apps and websites for you.
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All of this for $10 a month.
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That's cheaper than subscribing to any single AI separately.
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Visit chatllm.abacus.ai or click the link in the description and pinned comment.
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COPD.
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Chronic obstructive pulmonary disease kills 3.2 million people yearly.
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It's a slow suffocation that takes decades to develop.
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COPD destroys air sacs and inflames airways.
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Both make breathing progressively harder.
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What starts as occasional shortness of breath becomes inability to walk across a room.
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The cause in most cases is simple, smoking.
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Around 80 to 90% of COPD cases trace directly to cigarette smoke.
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The remaining cases come from air pollution or occupational dust exposure.
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If you smoke, COPD is probably already starting in your lungs.
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Lower respiratory infections Lower respiratory infections kill 2.6 million people every year.
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Pneumonia is the main culprit.
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These infections attack the lungs.
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Bacteria, viruses, or fungi invade, causing inflammation that fills air sacs with fluid.
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Breathing becomes difficult.
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In severe cases, oxygen can't reach the bloodstream.
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The body slowly suffocates.
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Children under 5 and adults over 65 face the highest risk.
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Weakened immune systems can't fight off infections that healthy adults clear easily.
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Pneumonia vaccines exist and work.
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Influenza vaccines reduce complications.
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Hand washing prevents transmission.
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In wealthy countries with good health care, most respiratory infections are treatable.
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But in regions without hospitals or medicine, these infections remain devastating.
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Lung cancer.
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Lung cancer kills 1.8 million people annually.
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It's the deadliest cancer worldwide.
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Cancer begins when cells mutate and multiply uncontrollably.
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In lung cancer, tumors destroy lung tissue and spread throughout the body.
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By the time symptoms appear, the cancer has often metastasized.
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Late detection means low survival rates.
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Smoking causes roughly 85% of lung cancer cases.
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Cigarettes contain dozens of carcinogens that directly damage lung cell DNA.
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More cigarettes, more years smoking, higher cancer risk.
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The lungs can heal remarkably well if given the chance.
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Alzheimer's and dementia.
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Dementia claims 1.6 million lives yearly.
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Alzheimer's disease accounts for most of them.
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Dementia isn't normal aging.
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It's the destruction of brain cells controlling memory, thinking, and behavior.
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People forget their children's names.
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They get lost in their own homes.
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Personality changes.
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The person disappears while the body remains.
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We don't fully understand what causes Alzheimer's.
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Prevention is less certain than with other diseases.
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But patterns emerge.
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What's good for the heart appears good for the brain exercise, healthy diet, social engagement, mental stimulation.
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Unlike sudden death, families watch loved ones vanish gradually.
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Diabetes.
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Diabetes kills 1.5 million people directly each year.
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Millions more die from complications it causes.
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Diabetes disrupts how your body processes sugar.
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Blood sugar rises to dangerous levels, damaging blood vessels, nerves, kidneys, eyes, and heart over time.
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Type 2 diabetes, most common form, is largely preventable.
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It's driven by obesity, poor diet, and lack of exercise.
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The body wasn't designed for constant sugar intake and sedentary living.
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When you flood the system with more glucose than it can handle for decades, the system breaks.
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Prevention and early management work.
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Lose excess weight, exercise regularly, eat fewer processed carbohydrates.
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These changes can prevent type 2 diabetes entirely or reverse it in early stages.
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The complications are what kill.
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Heart disease accelerates.
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Kidneys fail.
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Limbs require amputation.
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Diabetes doesn't always kill directly.
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It weakens the body until something else finishes the job.
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Diarrheal diseases.
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Diarrheal diseases kill 1.5 million people annually, almost all in places without clean water.
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Contaminated water and food carry pathogens causing severe diarrhea.
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The body loses fluids faster than they can be replaced.
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Dehydration follows.
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For children and the malnourished, dehydration can turn fatal within hours.
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In developed countries, diarrheal disease rarely kills.
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Clean water treatment and sanitation make deaths exceptional.
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These aren't advanced technologies.
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They're basic infrastructure much of the world lacks.
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Prevention is about systems.
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Clean water supplies, proper sewage treatment, vaccination against rotavirus.
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When these systems exist, diarrheal disease becomes a minor inconvenience instead of a killer.
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The tragedy is how solvable this is.
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We know exactly how to prevent these deaths.
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The interventions are cheap and proven.
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Yet 1.5 million people still die because they were born somewhere without functioning water systems.
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Kidney disease.
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Chronic kidney disease kills 1.3 million people yearly.
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Your kidneys are failing slowly and you probably don't know it.
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Kidneys filter waste from blood and regulate fluid balance.
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When they fail, toxins accumulate.
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Eventually, without dialysis or transplant, the body poisons itself.
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Most kidney disease develops silently.
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There's no pain as function declines.
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People lose 70% of kidney function before symptoms appear.
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By then, damage is irreversible.
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Regular blood tests catch problems early.
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Most people don't get them.
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Diabetes and high blood pressure cause the majority of kidney disease.
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Control these conditions, and kidney disease risk drops dramatically.
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Also, avoid overusing painkillers like ibuprofen.
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They damage kidneys with chronic use.
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Once kidneys fail completely, options narrow.
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Dialysis or transplant.
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Prevention means avoiding this fate entirely.
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Tuberculosis.
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Tuberculosis kills 1.3 million people each year.
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In ancient disease, humanity still hasn't defeated.
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TB is a bacterial infection attacking the lungs.
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It spreads through air when infected people cough.
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The bacteria can remain dormant for years before activating.
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When active, it causes coughing, weight loss, night sweats, and eventual death without treatment.
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Treatment exists and works.
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A six-month antibiotic course cures most cases.
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The problem is access and completion.
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Many infections occur where health care is limited.
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Patients start treatment but don't finish.
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Breeding drug-resistant strains.
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Prevention involves identifying and treating active cases before they spread.
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Better ventilation reduces transmission.
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Nutrition strengthens immune systems.
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TB thrives in poverty.
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Crowded housing, malnutrition, limited healthcare.
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The deaths continue because resources don't reach everyone.
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Liver disease.
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Liver disease kills 1.3 million people annually.
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The liver processes toxins, produces proteins, and performs hundreds of vital functions.
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It's remarkably resilient, able to regenerate from damage, but sustained assault eventually overwhelms it.
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Cirrhosis is irreversible scarring.
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Scarred liver can't function.
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Failure follows.
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Alcohol is the most common cause in developed countries.
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The liver processes alcohol into toxic byproducts.
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Heavy, chronic drinking doesn't allow recovery time.
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Damage accumulates until cirrhosis develops.
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Hepatitis B and C viruses cause most liver disease globally.
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Vaccines prevent hepatitis B.
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Hepatitis C now has a cure, though access remains limited.
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Fatty liver disease is rising rapidly, driven by obesity.
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Even without alcohol, excess fat causes inflammation and scarring.
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Prevention means limiting alcohol, vaccinating against hepatitis, and maintaining healthy weight.
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The liver will forgive a lot if you stop causing more damage.
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Road accidents Road accidents kill 1.2 million people every year.
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Most are young, most were preventable, and the numbers keep growing.
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Traffic deaths follow patterns.
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Speed kills.
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Alcohol impairs.
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Seat belts save.
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Helmets protect.
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Distracted driving destroys reaction time.
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Every accident investigation reveals the same factors.
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We know what kills people on roads.
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We just keep doing it.
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Individual prevention is straightforward.
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Wear seat belts.
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Don't drive drunk.
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Don't speed.
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Put down the phone.
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Wear helmets on motorcycles and bicycles.
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Systemic prevention involves road design, vehicle safety standards, and enforcement.
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Countries implementing these measures see deaths drop significantly.
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The frustrating truth is that road deaths are completely solvable.
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The solutions exist.
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Implementation is the problem.
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Meanwhile, 1.2 million people die annually in incidents we know how to prevent, HIV-slash-AIDS.
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HIV-slash-AIDS kills around 650,000 people yearly, down from nearly 2 million at its peak, but still devastating.
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HIV attacks the immune system, specifically the cells coordinating immune response.
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Without treatment, the immune system weakens until it can't fight infections.
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This stage is AIDS.
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Death follows from opportunistic infections or cancers.
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Treatment transformed HIV from death sentence to manageable condition.
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Antiretroviral drugs suppress the virus, allowing normal lifespans.
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They also reduce transmission to near zero.
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Prevention works at multiple levels.
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Condoms prevent sexual transmission.
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Clean needles prevent transmission among drug users.
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Pre-exposure prophylaxis prevents infection in high-risk individuals.
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Testing identifies infections early.
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The remaining deaths concentrate where treatment access is limited.
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The medical problem is solved, the access problem persists.
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Suicide.
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Suicide takes approximately 700,000 lives every year.
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For every death, many more attempt.
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Suicide results from pain exceeding coping resources.
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Depression, trauma, substance abuse, chronic illness, financial ruin.
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When suffering feels permanent and solutions invisible, Some people see death as the only escape.
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They're wrong, but in that moment they can't see alternatives.
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Most suicides involve warning signs, talking about being a burden, giving away possessions, withdrawing from activities.
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Recognizing these signs and intervening saves lives.
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Prevention starts with treating underlying conditions.
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Depression is treatable.
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Access to mental health care matters.
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Stigma that prevents help-seeking kills.
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Reducing access to lethal methods during crisis creates time for the impulse to pass.
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The tragedy is that most survivors of attempts report immediate regret.
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The permanence of the solution vastly exceeds the permanence of the problem.
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Malaria.
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Malaria kills around 600,000 people annually.
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Almost all are children in Africa.
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Malaria is caused by parasites transmitted through mosquito bites.
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The parasites multiply in the liver, then attack red blood cells.
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Fever and illness develop.
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In severe cases, death follows.
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Children under five lack the immunity that repeated exposure builds.
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Prevention centers on mosquitoes.
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Insecticide-treated bed nets create barriers during sleeping hours.
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Indoor spraying kills mosquitoes.
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Draining standing water eliminates breeding sites.
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These simple measures dramatically reduce transmission.
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Treatment works if received quickly.
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Antimalarial drugs clear infections within days.
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But children in remote villages can't access treatment fast enough.
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A vaccine now exists and is rolling out.
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Combined with prevention methods, it could save hundreds of thousands of lives.
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Malaria is another disease we know how to prevent.
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The deaths continue because solutions require resources reaching the poorest regions.
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A child's survival depends largely on where they were born.
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Thank you.
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本课的词汇与口语要点

这段视频共有 269 个句子、2016 个单词可供跟读。 讲话部分时长为 15:15。 说话人语速平稳，每分钟约 132 个词，很适合跟读。 只有 70% 的单词属于英语最常用的 3,000 词，词汇难度较高。

视频中的重点词汇

视频中 15 个值得学习的单词，附发音和释义：

单词发音释义
prevention 名词/pɹɪˈvɛnʃən/預防 /预防
infection 名词/ɪnˈfɛkʃən/傳染 /传染
lung 名词/ˈlʌŋ/физы, 肺
diabetes 名词/ˌdaɪəˈbiːtiːz/糖尿病
transmission 名词/tɹænsˈmɪʃən/傳輸 /传输
kidney 名词/ˈkɪdni/腎臟 /肾脏, 腎 /肾
chronic 形容词/ˈkɹɑ.nɪk/慢性
vaccine 名词/vækˈsin/疫苗
yearly 形容词/ˈjɪɹli/每年的
malaria 名词/məˈlɛəɹi.ə/瘧疾 /疟疾
hepatitis 名词/ˌhɛpəˈtaɪ̯tɪs/肝炎
virus 名词/ˈvaɪ.ɹəs/病毒
tragedy 名词/ˈtɹæd͡ʒ.ɪ.di/悲劇 /悲剧
cigarette 名词/ˈsɪɡəɹɛt/香煙 /香烟, 紙煙 /纸烟
obesity 名词/ə(ʊ)ˈbiːsɪti/肥胖, 肥胖症

视频中出现的短语动词

单词释义
put down 动词放下

需要注意的发音

说话人用了 29 次缩略和弱读形式，例如 don't, can't, they're。请按听到的简短形式来说。

  • “th” 音: breathe /bɹiːð/, wealthy /ˈwɛl.θi/, lethal /ˈliː.θəl/
  • “sh” 和 “zh” 音: prevention /pɹɪˈvɛnʃən/, infection /ɪnˈfɛkʃən/, transmission /tɹænsˈmɪʃən/, exposure /ɪkˈspəʊ.ʒə(ɹ)/, dementia /dɪˈmɛnʃə/
  • 长单词——注意重音位置: malaria /məˈlɛəɹi.ə/, hepatitis /ˌhɛpəˈtaɪ̯tɪs/, obesity /ə(ʊ)ˈbiːsɪti/, respiratory /ɹɪˈspɪ.ɹət.ə.ɹi/, cholesterol /kəˈlɛstəɹɒl/

如何用这段视频练习

  1. 先完整听一遍视频，不要开口，记下不认识的单词。
  2. 用正常速度逐句跟读，每句重复到你的节奏与说话人一致为止。
  3. 录下自己的声音并与原声对比，特别注意 prevention, infection, lung 这类单词。

视频中的语法

说话人最常用的结构，并附上视频中的原话：

结构视频中的用法
被动语态 be + 过去分词 — 强调发生了什么，而不是谁做的isn't complicated · wasn't designed · can be replaced
现在完成时 have/has + 过去分词 — 过去发生但与现在仍有关联的事has often metastasized · hasn't defeated

什么是跟读法？

跟读法 (Shadowing) 是一种有科学依据的语言学习技巧，最初开发用于专业口译员的培训，并由多语言者Alexander Arguelles博士普及。这个方法简单而强大：您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同，跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性，语调，节奏，连读，听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。

影子跟读法: 阅读完整分步指南 →