n. 西畴崖爬藤

This is Scientific American Sixty Seconds Science, I'm Sophie Bushwick, got a minute? When Mexican tetra fish moved into darker caves long ago, they evolved to deal with the dark by becoming albino and going blind. A new research shows that the chang

发表于:2018-12-24 / 阅读(71) / 评论(0) 分类 Scientific American(一)月

T Tanshinone IIA 丹参酮IIA Tanshinone I 丹参酮I Tanshinone IIB 丹参酮IIB Taraxasterol 蒲公英甾醇 Taraxerol 蒲公英赛醇 Tauro ursodesoxy cholic acid 牛磺熊去氧胆酸 Taxifolin 花旗

发表于:2019-01-03 / 阅读(60) / 评论(0) 分类 医务英语

DAVID GREENE, HOST: Ohio's governor, John Kasich, is back on the national stage this week. He's out with a new memoir about his bid for the 2016 Republican presidential nomination. The book is called Two Paths: America Divided Or United. I spoke with

发表于:2019-01-17 / 阅读(35) / 评论(0) 分类 2017年NPR美国国家公共电台4月

By Jessica Berman Washington 18 January 2006 Noma, a disfiguring mouth disease, can be found in many extremely poor countries, but the condition is especially common in sub-Saharan Africa. Noma comes

发表于:2019-01-25 / 阅读(99) / 评论(0) 分类 2006年VOA标准英语(一月)

DEVELOPMENT REPORT - HIV Stigma Toolkit By Jill Moss Broadcast: Monday, January 19, 2004 This is Robert Cohen with the VOA Special English Development Report. People living with AIDS and the virus tha

发表于:2019-01-25 / 阅读(47) / 评论(0) 分类 农业与发展

10 Getting The Lead Out 第十章 把铅撵出去 In the late 1940s, a graduate student at the University of Chicago named Clair Patterson (who was, first name notwithstanding, an Iowa farm boy by origin) was using a new method of lead isotope measur

发表于:2019-02-17 / 阅读(70) / 评论(0) 分类 万物简史
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