शैडोइंग अभ्यास: Could This Thing *Really* Fly? - वीडियो के साथ अंग्रेजी बोलना सीखें
पाठ बनाया जा रहा है...
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This video is brought to you by FarmKind. More about them at the end of the video.
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The Quetzalcoatlus – one of the largest pterosaurs that ever lived – was able to… fly?!
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That doesn’t sound right.
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I mean, look at this thing – it’s the size of a giraffe!
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However, giant pterosaurs’ ability to fly is really well-established in the scientific community.
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So how on Earth did this giant manage to fly?
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Hi, I’m Ever and this is MinuteEarth.
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Thanks to the fossil record, we know that pterosaurs had wings with elongated hand bones, just like every other flying vertebrate. But simply having wings doesn’t mean you can actually fly.
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If you’re too heavy for the size of those wings – or if you can't flap them fast enough – you’ll never get anywhere. And compared to the biggest flying creatures alive today – the Kori bustard, or the wandering albatross, or even the Andean condor, depending on how you measure it – the Quetzalcoatlus was way, WAY bigger.
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But, despite this giant pterosaur’s wingspan, scientists estimate that it was only about as heavy as a large pig.
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Now with the wing-to-mass ratio looking more decent, giant pterosaurs still needed to be strong enough to flap them.
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And while wing muscles themselves aren’t preserved in the fossil record, we know pterosaurs had huge bumps in their forelimb bones and highly modified breastbones, with ample attachment space for powerful chest muscles – just like modern flying birds do.
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So it’s reasonable to believe their wing muscles were pretty brawny.
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On top of that, pterosaurs had mostly hollow bones that increased the volume of their respiratory system – again, just like modern flying birds – which allowed them to deliver tons of oxygen to all those flight muscles!
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All this likely helped a Quetzalcoatlus’s big body stay aloft once it was in the air.
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But getting into the air in the first place is the hardest and most energy-intensive part of flight.
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Flying birds use their strong leg muscles to launch themselves into the air; that’s why the bigger a bird is, the larger and more powerful its legs tend to be.
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Giant pterosaurs were so huge that, in order to jump into the air like birds, they would have needed truly gigantic legs that would have made them definitely too heavy to fly.
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So they solved the whole launching problem in a different way: they used their powerful wings for the dual purpose of taking off and flapping.
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And this strategy is so efficient, that bats independently evolved it as well.
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By the way, I think that this is my favorite fact about giant pterosaurs –and bats, of course.
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Once you look at all the evidence and the facts, it makes perfect sense that these giant pterosaurs could truly soar.
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They might look too big and wonky, but the Quetzalcoatlus was about as close as we’ve ever come to a flying pig.
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Pigs these days, of course, rarely fly.
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And – sorry to be a downer, especially after that uplifting video - but in a lot of places, the conditions they’re kept in are heartbreaking.
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As someone who loves animals, I hate to see any animal suffering so much.
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That’s why we want to help make a genuine positive change with today’s sponsor, FarmKind.
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FarmKind helps improve the lives of animals by recommending expert-reviewed, top charities whose work really makes a big difference.
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Like Sinergia Animal, which is helping end the inhumane practice of keeping breeding pigs confined in tiny crates.
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FarmKind never takes a cut of your donation; it all goes to the charities helping animals.
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If you sign up for just $15 bucks a month, that’s just 50 cents a day, you'll save 350 animals from unnecessary suffering in your first year. Use the code MinuteEarth for a 50% boost on monthly donations.
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If even a fraction of this community did that, we'd transform the lives of hundreds of thousands of animals. Check out the description for more info. Thanks FarmKind.
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इस क्लिप के लिए बोलने के लक्ष्य
इस वीडियो में हम एक दिलचस्प विषय पर चर्चा कर रहे हैं - क्या एक विशाल प्राणी उड़ सकता है? यह संवाद आपको न केवल विज्ञान के बारे में जानकारी देगा, बल्कि आपकी अंग्रेजी बोलने का अभ्यास के लिए भी महत्वपूर्ण होगा। इस वीडियो में दिए गए विचार और तथ्य आपको अंग्रेजी शैडोइंग तकनीक का उपयोग करके अपनी बोलने की दक्षता में सुधार करने में मदद करेंगे। जब आप इस वार्तालाप का अभ्यास करते हैं, तो आप स्पष्टता और आत्मविश्वास के साथ बोलने की कला को विकसित करेंगे।
फ्रेज़ बैंक
- “यह बहुत बड़ा लगता है”
- “क्या यह सच में उड़ सकता है?”
- “यह बहुत भारी है”
- “उड़ने के लिए पर्याप्त मजबूत होना चाहिए”
- “यह एक अलग तरीके से हल किया गया है”
- “बिना किसी कठिनाई के”
इन वाक्यांशों का नियमित अभ्यास करने से आप अपने संवाद में विविधता ला सकते हैं। इन्हें अपने दैनिक वार्तालापों में शामिल करें ताकि आप अपने अंग्रेजी बोलने की क्षमता को और अधिक बढ़ा सकें।
अपनी कमजोरियों को सुधारें
इस वीडियो और इसके संवादों की मदद से, आप सही उच्चारण और ताल पर ध्यान केंद्रित कर सकते हैं। जब आप शैडो स्पीक तकनीक का उपयोग करते हैं, तो यह सुनिश्चित करें कि आप शब्दों के उच्चारण को सही तरीके से दोहराएं। वीडियो में दिखाई गई अवधारणाओं को समझकर, आप अपनी उच्चारण संबंधी कमजोरियों को दूर कर सकते हैं।
अंग्रेजी बोलने के लिए यूट्यूब से अंग्रेजी सीखें की तकनीक का उपयोग करें, जिसमें आप वीडियो को बार-बार देख सकते हैं और उन्हें दोहराकर अपनी बोलने की क्षमता को मजबूत कर सकते हैं। यह प्रक्रिया न केवल आपकी सुनने की क्षमता को बढ़ाएगी, बल्कि आपको आत्मविश्वास के साथ अंग्रेजी बोलने में मदद भी करेगी।
याद रखें, अभ्यास से ही सफलता मिलती है। इसलिए नियमित रूप से इस वीडियो का अभ्यास करें और अपनी बोलने की कला में निखार लाएं।
इस वीडियो का व्याकरण
वक्ता जिन संरचनाओं का सबसे अधिक प्रयोग करता है, वीडियो के असली शब्दों के साथ:
| संरचना | वीडियो में |
|---|---|
| Passive voice be + past participle — ज़ोर इस पर कि क्या होता है, न कि कौन करता है | is brought · aren't preserved |
| Relative clauses who / which + उपवाक्य — व्यक्ति या वस्तु के बारे में अतिरिक्त जानकारी | someone who loves · Animal, which is |
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।