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This is Scientific Americans 60-Second Science. Im Steve Mirsky. Got a minute? To keep your car purring, you have to change the oil. Such maintenance produces eight billion gallons of used motor oil annually. Some waste oil does get re-refined to pro
Scientific American(三)月
B Baicalein 黄芩素 Baicalin 黄芩甙 Baical Skullcap root P.E 黄芩提取物 Bakuchiol 补骨脂酚 Bavachalcone 补骨脂查耳酮 Barley Grass P.E 麦苗精提取物 Beiwutine 北乌碱 Benzoyl
医务英语
This is Scientific American's 60-Second Science. I am Steve Mirsky.Got a minute? Talk about your vicious cycles. A new study finds that belly fat could be making you hungrier. Which would lead to more belly fat. The research was performed at the Univ
Scientific American(四)月
Algae seem harmless enough. These precursors to plants thrive throughout the world's waters. But these single-celled plants have global consequences. We can thank them for oxygen in the atmosphere, oil in the lithosphere as well as dead zones in the
Scientific American(十一)月
By Brian Wagner Miami 22 September 2009 A supporter of Honduras' ousted President Manuel Zelaya runs during clash with riot police in front of Brazil embassy in Tegucigalpa, 22 Sep 2009 Riot police in Honduras on Tuesday broke up marches by supporte
VOA标准英语2009年(九月)
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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