标签：生物角膜 相关文章

VOA标准英语--神经科学发现政治强腕的生物基础

Neuroscience Finds Biological Roots of Political Stubbornness Control of Congress is at stake in this November's U.S. midterm elections. In today's highly polarized political environment, Republican and Democratic partisans have staked their position

发表于:2018-12-01 / 阅读(102) / 评论(0) 分类 VOA标准英语2018年(九月)

VOA常速英语2018--千篇一律的城市草坪不利于生物多样性

Butterflies are as beautiful as the flowers they feed on. But they appear to be less abundant than in years past and that has scientists worried. Because butterflies, bees and other beneficial bugs pollinate plants and are crucial to as much as eight

发表于:2018-12-08 / 阅读(50) / 评论(0) 分类 VOA标准英语2018年(九月)

科学美国人60秒 SSS Species Split When Mountains Rise

Species Split When Mountains Rise生脉隆起导致生物多样化 The tropics are well known for their biodiversity. But another hotspot? Mountains. Like the Hengduan Mountains, in south-central China. 热带地区因为其生物多样性而为大家所

发表于:2019-01-20 / 阅读(95) / 评论(0) 分类 2017年Scientific American(四)月

英语听力文摘 English Digest 13、交配8-9个小时的生物

Don: All right, Yael, you're a moth. And mating for you is a big deal because it takes eight or nine hours. So the last thing you want is for some predator to interrupt you and your mate in the act. Yael: I'm guessing that's true not just for moths.

发表于:2019-01-26 / 阅读(60) / 评论(0) 分类 英语听力文摘 English Digest

科学美国人60秒 SSS 无人机的生物用途

Drones Could Help Biologists Tally Birds Ecologists crouching quietly amidst vegetation, using binoculars to tally birds in a roost, may soon be a charming relic of the past. Because a new study shows that, when it comes to getting an accurate avian

发表于:2019-02-14 / 阅读(89) / 评论(0) 分类 2018年科学美国人3月

英语听力文摘 English Digest 371、甲虫强过绿巨人？

Beetle: Stronger than Hulk? 甲虫强过绿巨人？ As we know from the movie, the Hulk is a guy who, when he gets angry, turns into the strongest, meanest creature on earth. The natural world features a few amazing ly strong creatures of its own. I

发表于:2019-02-16 / 阅读(69) / 评论(0) 分类 英语听力文摘 English Digest

英语听力文摘 English Digest 432、吃人的巨型生物

Anaconda 水蟒 Before Jennifer Lopez became J. Lo, she was an up and coming actress. Perhaps her worst movie was Anaconda , about a giant snake that terrorizes a documentary film crew in the Amazon rain forest. Hollywoods version of the snake was pu

发表于:2019-02-16 / 阅读(58) / 评论(0) 分类 英语听力文摘 English Digest

英语听力文摘 English Digest 247、呼吸甲烷

A Fresh Breath of Methane 很早很早以前地球有很微量的氧气，而且地表状况十分恶劣。大气主要是N2和Co2，后来通过复杂的变化，地球开始出现了厌氧型生物。在生命的作用下，地球的氧气开始不断

发表于:2019-03-09 / 阅读(125) / 评论(0) 分类 英语听力文摘 English Digest

英语听力文摘 English Digest 235、海洋死区

Dead Zones in the Ocean 所谓海洋死区是指由于海水富营养化日益严重，导致海水中含氧量减少，鱼类等生物无法生存的区域。科学家介绍，人类过量使用化肥、大量生活垃圾、车辆和工厂排放的废

发表于:2019-03-09 / 阅读(198) / 评论(0) 分类 英语听力文摘 English Digest

英语听力文摘 English Digest 239、外来物种入侵

Oceans Most Wanted 伴随着人们的经济活动和国际交往，一些物种由原生存地借助于人为作用或其他途径移居到另一个新的生存环境并在新的栖息地繁殖并建立稳定种群，这些物种被称为外来物种。

发表于:2019-03-09 / 阅读(217) / 评论(0) 分类 英语听力文摘 English Digest
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