英語(yǔ)聽(tīng)力 學(xué)英語(yǔ),練聽(tīng)力,上聽(tīng)力課堂! 注冊(cè) 登錄
> 在線聽(tīng)力 > 英語(yǔ)高級(jí)聽(tīng)力 > 英語(yǔ)時(shí)差 >  第247篇

英語(yǔ)時(shí)差:魷魚(yú)之嘴

所屬教程:英語(yǔ)時(shí)差

瀏覽:

2019年08月24日

手機(jī)版
掃描二維碼方便學(xué)習(xí)和分享
https://online2.tingclass.net/lesson/shi0529/10000/10183/247.mp3
https://image.tingclass.net/statics/js/2012
Ya?l: I've got a good trivia question for you, Don.

Don: OK, Ya?l.

Y: What animal's beak is one of the hardest known organic substances?

D: Umm . . . I don't know. The bald eagle?

Y: Nope. It's the giant squid. A squid beak can reportedly snap through a steel cable.

D: That's actually sort of surprising . . . because aren't squid's bodies normally squishy and soft?

Y: Yes. And that's exactly what's puzzled scientists . . . how can such a hard beak be attached to a squid's soft, jello-like tissue without falling off or cutting the squid to bits? What the researchers found is that squids can control the amount of water that gets into their beaks. Because virtually no water is allowed into the tip, it stays very hard and stiff. There's more water inside the lower parts of the beak, making it gradually softer. At its base, the beak is soft enough to blend right into the squid's body.

D: Nature never fails to amaze.

Y: No doubt. And the discovery could inspire the invention of new building materials that mimic the squid beak's gradations of stiffness and flexibility. Engineers are also concerned with joining together different materials like metals, ceramics and plastics. Learning more about squid beaks could help scientists create adhesives that bond with metal on one side and plastic on the other, for example.

D: I wonder if squids know how dynamic their beaks are?

Y: You'd have to ask them.

用戶搜索

瘋狂英語(yǔ) 英語(yǔ)語(yǔ)法 新概念英語(yǔ) 走遍美國(guó) 四級(jí)聽(tīng)力 英語(yǔ)音標(biāo) 英語(yǔ)入門(mén) 發(fā)音 美語(yǔ) 四級(jí) 新東方 七年級(jí) 賴世雄 zero是什么意思泉州市豐澤區(qū)溫陵新城一期英語(yǔ)學(xué)習(xí)交流群

網(wǎng)站推薦

英語(yǔ)翻譯英語(yǔ)應(yīng)急口語(yǔ)8000句聽(tīng)歌學(xué)英語(yǔ)英語(yǔ)學(xué)習(xí)方法

  • 頻道推薦
  • |
  • 全站推薦
  • 推薦下載
  • 網(wǎng)站推薦