单词：Swertia shintenensis
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让我们承认吧：无人飞机摄影有一点恶心，它们有巨大的监管和安全问题。但是无人飞机摄影可以成为一个很有力的方法来对世界说出真相：一个抗议的规模，石油的逸散，三角洲后隐藏的动
TED公开课:重释机器
As you've probably experienced firsthand, some mosquito species have a real taste for warm, human blood. So much so that if you raise them on it the lab, they'll accept no substitute. Fortunately, I don't get major reactions at all. Brad Main is a mo
2016年Scientific American(九)月
HOST: Welcome to AMERICAN MOSAIC in VOA Special English. (MUSIC) I'm Doug Johnson. On today's program, we tell about an artist who uses everyday objects to make sculptures Answer a question about the store Wal-Mart And hear banjo music by Steve Mart
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In Africa's battle against malaria, two low-tech tacticsinsecticides and bed netshave done a decent job killing off mosquitoes. But it's mainly one species that's been affected. That's a species called Anopheles gambiae, sometimes called the African
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You might not think there would be that many people in the world prepared to devote lifetimes to the study of something so inescapably low key, 你或许会认为，世界上不会有多少人愿意花毕生的心血来研究那个不起眼儿的东西
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