跟读练习: Can loud music damage your hearing? - Heather Malyuk - 通过YouTube学习英语口语
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After a three-hour concert by her favorite Norwegian metal band, Anja finds it difficult to hear her friend rave about the show.
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After a three-hour concert by her favorite Norwegian metal band, Anja finds it difficult to hear her friend rave about the show.
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It sounds like he's speaking from across the room, and it’s tough to make out his muted voice over the ringing in her ears.
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By the next morning, the effect has mostly worn off, but Anja still has questions.
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What caused the symptoms? Is her hearing going to fully recover?
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And can she still go to concerts without damaging her ears?
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To answer these questions, we first need to understand what sound is and how we hear it.
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Like a pebble creating ripples in water, sound is created when displaced molecules vibrate through space.
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While sound vibrations can travel through solids and liquids, our ears have evolved to process vibrations in the air.
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These waves of air pressure enter our ear canals and bounce off the eardrum.
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A trio of bones called the ossicular chain then carries those vibrations into the cochlea, transforming waves of air pressure into waves of cochlear fluid.
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Here, our perception of sound begins to take form.
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The waves of fluid move the basilar membrane, a tissue lined with tens of thousands of hair cells.
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The specific vibration of these hair cells and the stereocilia on top of each one determine the auditory signal our brain perceives.
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Unfortunately, these essential cells are also quite vulnerable.
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There are two properties of sound that can damage these cells.
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The first is volume.
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The louder a sound is, the greater the pressure of its vibrations.
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While the ear’s upper limits vary from person to person, close range exposure to sound exceeding 120 decibels can instantly bend or blow out hair cells, resulting in permanent hearing damage.
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The pressure of more powerful sounds can even dislocate the ossicular chain or burst an eardrum.
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The other side of this equation is the sound’s duration.
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While dangerously loud sounds can injure ears almost instantly, hair cells can also be damaged by exposure to lower sound pressure for long periods.
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For example, hearing a hand dryer is safe for the 20 seconds you’re using it.
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But if you listened for 8 consecutive hours, this relatively low-pressure sound would overwork the stereocilia and swell the hair cell’s supporting tissue.
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Swollen hair cells are unable to vibrate with the appropriate speed and accuracy, making hearing muffled.
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This kind of hearing loss is known as a temporary threshold shift, and many people will experience it at least once in their lifetime.
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In Anja’s case, the loud sounds of the concert only took three hours to cause this condition.
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Fortunately, it's a temporary ailment that usually resolves as swelling decreases over time.
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In most cases, simply avoiding hazardous sounds gives hair cells all they need to recover.
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One temporary threshold shift isn’t likely to cause permanent hearing loss.
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But frequent exposure to dangerous sound levels can lead to a wide range of hearing disorders, such as the constant buzz of tinnitus or difficulty understanding speech in loud environments.
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Overworked hair cells can also generate dangerous molecules called reactive oxygen species.
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These molecules have unpaired electrons, driving them to steal electrons from nearby cells and cause permanent damage to the inner ear.
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There are numerous strategies you can adopt for preventing hearing loss.
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Current research around earbud headphone use suggests keeping your volume at 80% or less if you’ll be listening for more than 90 minutes throughout the day.
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Noise-isolating headphones can also help you listen at lower volumes.
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Getting a baseline understanding of your hearing is essential to protecting your auditory system.
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Just like our eyes and teeth, our ears also need annual check-ups.
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Not all communities have access to audiologists, but organizations around the world are developing portable hearing tests and easy-to-use apps to bring these vital resources to remote regions.
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Finally, wear earplugs when you’re knowingly exposing yourself to loud sounds for extended periods.
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An earplug’s effectiveness depends on how well you’ve inserted it, so be careful to read the instructions.
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But when worn correctly, they can ensure you'll be able to hear your favorite band for many nights to come.
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为什么与这段视频练习口语？
通过观看并跟随 shadowspeak 的视频，您可以深入了解如何用英语讨论与健康相关的主题，例如听力与声音的关系。这不仅能提升您的口语能力，还能增加对音频内容的理解，帮助您在交流中更自信。例如，您可以讨论在音乐会后体验听力变化的个人故事，这类话题常常引起共鸣，使您的对话更加生动。此外，练习这类情境对 雅思口语练习 特别有帮助，因为它们涉及真实生活中的场景和问题。
语法与表达在语境中的运用
在视频中，演讲者使用了一些关键的语法结构和表达方式，这些都非常适合 看YouTube学英语 的学习者。以下是几个例子：
- What caused the symptoms? — 使用“what”引导的疑问句，适合用来询问原因。
- Is her hearing going to fully recover? — “be going to” 表达未来的预期状态，能帮助您描述未来的计划或预测。
- While sound vibrations can travel through solids and liquids — 使用“while”可以表达对比或条件，为您的句子增加复杂性。
- The pressure of more powerful sounds can even dislocate — 此句展示了如何使用情态动词与动词原形结合描述影响。
这些表达方式将在您的日常交流中显得尤为重要，尤其是在高水平的英语考试中。
常见发音陷阱
在这段视频中，有几个单词的发音可能会对学习者构成挑战。比如，“cochlea” 这个词对于非母语者来说比较复杂，因为其发音与拼写并不完全一致。此外，发音的重音位置也非常重要。例如，“louder”和“sound”这两个词在快速对话中可能会混淆。掌握这些发音技巧有助于您在口语交流中更加流利，减少误解，同时提高您在 shadowspeaks 的使用体验。
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。