शैडोइंग अभ्यास: Why Don't Snakes Poison Themselves? - वीडियो के साथ अंग्रेजी बोलना सीखें
अभ्यास मोड चुनें
हर मोड पूरी स्क्रीन का अभ्यास कक्ष खोलता है।
67 वाक्य
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The Egyptian cobra's venom is super toxic.
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Even in tiny quantities, it can kill relatively big animals.
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But the Egyptian cobra, as well as pretty much every other toxic animal,
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has to produce and store those deadly chemicals inside its own body.
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So why don't toxic animals hurt themselves?
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Hi, I'm Cameron, and this is MinuteEarth.
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The first, and probably most obvious,
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way to avoid kicking your own bucket is to make sure your poison doesn't work on you,
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which is a strategy many poison dart frogs use use.
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When their poison gets on another critter,
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it snaps into specially shaped receptors in that animal's nerves,
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eventually stopping its heart.
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But the poison doesn't affect the frog itself,
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because the frog has evolved a slightly different version of that nerve protein,
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changing its shape just enough to prevent the poison from ever latching on.
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Another option is to have a way to soak up your own poison before it can kill you,
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like the pitohui, a tropical bird that puts poison in its feathers.
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In order to keep itself safe from its own poison,
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it produces proteins in its bloodstream that act like sponges that stick to,
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and basically disarm, poison molecules.
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The next strategy is even simpler.
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Simply store your toxins in a place where they can't hurt you,
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like murder hornets and black widow spiders do.
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Both of these animals are susceptible to their own venom,
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but their weaponry is located in a place where it is walled off from the rest of the body,
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and for them, it's physically impossible to unleash it on themselves.
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And finally, you could store your toxins in an inactive form,
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like the slow loris, the world's only venomous primate, does.
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The toxin the loris secretes from its armpits is completely harmless on its own.
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It's only when the animal licks its armpit,
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putting the venom in contact with saliva,
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that the venom becomes activated.
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And when the loris subsequently bites an enemy,
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that venom gets transferred to the bite wound,
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where it causes the victim's flesh to rot away.
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Because carrying deadly chemical weapons inside your own body is such a high-stakes situation,
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lots of toxic species actually use more than one of these strategies to stay safe.
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Which brings us back to the Egyptian Cobra,
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which uses all four methods to protect itself from its own venom.
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The snake has those modified nerve proteins that make it immune to the nerve paralyzing toxin in its venom.
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But since that venom is a cocktail that contains other toxins to,
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the snake also stores it in walled-off glands.
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Beyond just locking the venom away,
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these glands also temporarily inactivate the venom in part by bathing it in acids.
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It only becomes reactivated in a basic environment, like its victim's blood.
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And if the venom happens to leak into the snake's own blood,
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a sponge-like protein in its bloodstream mops up the toxins before they do any harm.
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In other words, if you're going to be venomous or poisonous, Use protection.
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If you're a snake and you want to level up your game,
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you develop chemical weapons.
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And if you're a human and you want to level up your career,
52
you develop, well, developer skills.
53
Boot.dev, which sponsored this video,
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Hey, another snake!
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And all of this is within a system specially designed to have you writing eight to out of code,
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because, well, the best way to learn is by doing.
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Click the link in the description and use the code MINUTEEARTH to get 25% off your first month,
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or even off your entire first year if you choose the annual plan.
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Thanks, Boo.dev!
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Thank you.
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इस पाठ के बारे में
इस पाठ में, आप जानेंगे कि विषैले जीव अपने ही विष से कैसे सुरक्षित रहते हैं। विशेष रूप से, हम अजगर कोबरा और उसके विष के विभिन्न तरीकों का अध्ययन करेंगे, जिनसे ये जीव अपने शरीर में विष को सुरक्षित रखते हैं। यह जानने से आपको न केवल जीव विज्ञान की जानकारी मिलेगी, बल्कि आप अपनी अंग्रेजी बोलने का अभ्यास भी कर सकेंगे। विष के कारण से जुड़ी शब्दावली और वाक्यांशों का उपयोग करते हुए, आप अंग्रेजी स्पीच में सुधार करेंगे।
मुख्य शब्दावली और वाक्यांश
- विष (venom) - एक प्रकार का जहर जो जीवों के द्वारा उत्पन्न होता है।
- आवरण (glands) - शरीर के अंग जो विष को संचित करते हैं।
- निर्जीव (inactive) - ऐसा विष जो जब तक सक्रिय नहीं किया जाता, तब तक हानिकारक नहीं होता।
- प्रोटीन (proteins) - शारीरिक संरचना का मूल तत्व जो विष को निष्क्रिय करने में मदद करता है।
- उत्तेजना (activation) - प्रक्रिया जिसके द्वारा विष सक्रिय होता है।
- पारालाइजिंग (paralyzing) - ऐसा विष जो तंत्रिका तंत्र को प्रभावित करता है।
- खून (blood) - शरीर का तरल जो विष को ले जाता है।
- विकृति (mutation) - अनुवांशिक परिवर्तन जो जीवों के प्रणालियों को सुरक्षित करता है।
अभ्यास के टिप्स
इस विडियो के संवाद की गति और स्वर को ध्यान में रखते हुए, यहाँ कुछ सुझाव दिए गए हैं जिन्हें आप अंग्रेजी बोलने का अभ्यास करते समय अपनाने के लिए उपयोग कर सकते हैं:
- शैडो स्पीच (shadow speech): वीडियो के संवाद को बार-बार सुनें और उनके साथ बोलें। अपने उच्चारण और लहजे पर ध्यान दें।
- शैडोज़पीक (shadowspeak): पहले कुछ सेकंड केवल सुनें, फिर आलंबित होकर दोहराएं।
- स्पीड पर ध्यान दें: यदि संवाद जल्दी हो रहा है, तो उसे धीमा करके सुनें। इससे आपको हर शब्द का सही उच्चारण करने में मदद मिलेगी।
- संवाद के अलग-अलग हिस्सों पर ध्यान केंद्रित करें: विशेष रूप से उन भागों पर ध्यान दें जहाँ कोई नया शब्द या वाक्यांश है।
- दोपहर में नियमित अभ्यास करें: रोजाना थोड़ा समय निकालें और शैडोइंग साइट पर नियमित रूप से अभ्यास करें।
इस वीडियो का व्याकरण
वक्ता जिन संरचनाओं का सबसे अधिक प्रयोग करता है, वीडियो के असली शब्दों के साथ:
| संरचना | वीडियो में |
|---|---|
| Present perfect have/has + past participle — बीता हुआ काम जिसका असर अभी भी है | has evolved · has created · They've gamified |
| Passive voice be + past participle — ज़ोर इस पर कि क्या होता है, न कि कौन करता है | is located · are designed |
शैडोइंग तकनीक क्या है?
शैडोइंग (Shadowing) एक विज्ञान-समर्थित भाषा सीखने की तकनीक है जो मूल रूप से पेशेवर दुभाषिया प्रशिक्षण के लिए विकसित की गई थी। विधि सरल लेकिन शक्तिशाली है: आप मूल अंग्रेज़ी ऑडियो सुनते हैं और तुरंत इसे ज़ोर से दोहराते हैं — जैसे वक्ता की छाया 1-2 सेकंड की देरी से। शोध से पता चलता है कि यह उच्चारण सटीकता, स्वर, लय, जुड़ी हुई ध्वनियाँ, सुनने की समझ और बोलने की प्रवाहशीलता में काफ़ी सुधार करता है।