跟讀練習: How Realistic Is Spider-Man's Web Slinging Antics? - 通過影片學習英語口語
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30 句
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In the recent film starting Tom Holland, Peter Parker cooks up his own webbing in his high-school chemistry class.
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Now, he could have made it out of anything, like fishing line or even steel, and yet he chooses to replicate spider silk.
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Spider silk.
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This kid is trusting his life to a flimsy-looking strand of arachnid goo.
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But it turns out, if Peter's web is anything like real spider silk, then his web-slinging antics are more realistic than they might appear.
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Now, spider silk doesn't look very durable.
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After all, a strand can be as little as 1/40 the thickness of a human hair, but, pound for pound, it's stronger than steel.
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So if you twisted spider silk into a thread that was 2 millimeters wide, as thick as a strand of spaghetti, it could support 900 pounds before breaking, strong enough for a polar bear to hang from.
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So a scrawny kid, like Spider-Man? He's got this.
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Jim Kakalios: And that's just for a 2-millimeter-diameter webbing.
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If he needs more, he just makes it a little bit thicker, and it could support even more weight.
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Narrator: That's physicist Jim Kakalios, the author of "The Physics of Superheroes." He says that the secret to spider silk's strength is its structure.
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Real spider silk has two major components: extremely rigid nanocrystals that make the silk sturdy and stretchy, elastic polymers that make it pliable.
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That combination of tough and flexible makes the silk extremely hard to tear, and, if you look at Peter's lab notes, it looks like he tries to mimic that same structure.
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Kakalios: So, it looks like it is a set of organic molecules that he is using, and he's trying to combine them in ways to polymerize them, to basically take these complex molecules and link them together in longer chains that would then presumably fold down and develop these nanocrystals and the elastic polymers.
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Narrator: But Peter may have gone one step further and actually made one improvement to his synthetic silk.
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Kakalios: I think that, instead of these little nanocrystals of proteins that spiders use, he might be using carbon nanotubes to provide the strength and rigidity.
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Narrator: Carbon nanotubes are basically a sheet of carbon atoms that's been rolled up into a tube.
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And if Jim's right, Peter is one smart high-school student, because these tiny tubes are actually some of the strongest material known to humans.
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In fact, they're over 100 times as strong as steel.
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And that's when they're microscopic.
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So, a spaghetti-thin strand of this stuff, like what we see in "Spider-Man"?
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It could support far more than just 900 pounds.
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Kakalios: That would be able to support over 40,000 pounds.
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Narrator: Suddenly that ferry scene doesn't seem so far-fetched, especially since we have the technology to make those nanotubes in real life.
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Scientists at the University of Cincinnati, for example, have figured out how to grow carbon nanotubes in a lab and then spool them into threads.
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Sadly, those threads aren't meant for skyscraper-swinging antics.
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The researcher's goal is a tad more practical.
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Kakalios: If you could manufacture it and make threads out of carbon nanotubes, you could make lightweight clothing that would be stronger than Kevlar.
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Narrator: So, when you really think about it, the most unrealistic thing about Peter Parker's homemade webbing is that a high schooler figured out how to make it in his chem class.
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關於本課
在本課程中，我們將深入分析一段關於蜘蛛俠的網絲科技的討論。在這段影片中，講解了彼得·帕克是如何在高中化學課上製造自己的人造網絲的。通過這個案例，學習者將練習與“蜘蛛絲”相關的詞彙和表達，瞭解如何通過生物學和化學的角度解釋日常事物。此外，影片中還涉及了物理學知識，這將幫助你在雅思口語或其他英語口語練習中，能夠更自信地表達複雜的主題和想法。
重要詞彙和短語
- webbing - 網絲，指蜘蛛或蜘蛛俠使用的絲繩。
- synthetic silk - 人造絲，模仿自然蜘蛛絲的合成材料。
- carbon nanotubes - 碳奈米管，一種強度極高的材料。
- rigid - 剛性的，表示某物無法彎曲或改變形狀。
- polymerize - 聚合，化學過程，通過它小分子結合成大分子。
- elastic - 有彈性的，指材料能夠恢復原形的特性。
本影片練習技巧
在觀看和跟讀此影片時，請注意配合以下練習技巧：
- 保持適中的語速，逐漸適應影片中專家的表達清晰度，以便更好地聽懂專業內容。
- 模仿講解者的口音和重音，增強自我發音練習的效果，使你的英語流利度提高。
- 對於涉及複雜術語的部分，建議慢慢跟讀，並在理解詞彙含義後複述給自己，可提高口語自信心。
- 嘗試複述影片中的重點內容，並討論蜘蛛絲的強度與日常生活中的實用性，從而鍛鍊你的英語表達技巧和邏輯能力，有助於雅思口語部分的準備。
影片中的語法
說話人最常用的結構，並附上影片中的原話：
| 結構 | 影片中的用法 |
|---|---|
| 現在完成時 have/has + 過去分詞 — 過去發生但與現在仍有關聯的事 | that's been rolled · have figured |
| 被動語態 be + 過去分詞 — 強調發生了什麼，而不是誰做的 | been rolled · aren't meant |
什麼是跟讀法？
跟讀法 (Shadowing) 是一種有科學依據的語言學習技巧，最初開發用於專業口譯員的培訓，並由多語言者Alexander Arguelles博士普及。這個方法簡單而強大：您在聽英語母語原聲的同時立即大聲重複——就像是一個延遲1-2秒緊跟說話者的影子。與被動聽力或語法練習不同，跟讀法強迫您的大腦和口腔肌肉同時處理並模模擬實的講話模式。研究表明它能顯著提高發音準確性，語調，節奏，連讀，聽力理解和口語流利度——使其成為雅思口語備考和真實英語交流最有效的方法之一。