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Windows Vex Bats' Echolocating Abilities 干扰蝙蝠回声定位的烦人窗 Just as humans understand the shape of our surroundings by how light reflects off objects, bats use reflections of sounds they produce insteadwhats called echolocation. But
2017年Scientific American(九)月
Flawless pearls are among the most symmetrical spheres biological organs. But do they get so round? Turns out they turn. Pearls and mollusks such as oysters create so-called pearls acs around intrusive pieces of grit. The sac coat the yelten with the
Scientific American(六)月
Why do golf balls have dimples(酒窝, 涟漪)?So that they look cute? NO! Because the dimples maximize the distance golf balls travel. Dimpled balls travel up to four times farther than smooth-surfac
奥运英语
A Smooth Wake 平静的尾流 （A smooth wake on today's moments of science） Female: Donne and I are on a fantacy cruise . The sun has set and were standing on the rear deck. Look at the reflection of the moon. Male: You might expect a ship's wake
英语听力文摘 English Digest
Just as humans understand the shape of oursurroundings by how light reflects off objects, batsuse reflections of sounds they produce insteadwhat's called echolocation. But despite theirexcellent sensing abilities, one type of obstaclevexes the animal
2018年科学美国人1月
托福阅读的关键是在于多看多练，为了帮助广大考生更好的复习，小编为大家整理提供托福阅读背景知识，以供各位考生复习参考，生活中有很多事情需要大家细心观察和发现，阅读文章不仅
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