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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

bane, [bein] n 祸根(死亡或毁灭的根源);致命伤 【例】the bane of one's existence 克星 【记】1)ban挡住-挡住运气-祸根 2)读:背。点儿背-祸根 【反】blessing(n 祝福);benefit(n 利益好处)

发表于:2018-12-30 / 阅读(32) / 评论(0) 分类 不择手段背单词

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

AGRICULTURE REPORT - Restrictions on Methyl Bromide By Mario Ritter Broadcast: Tuesday, March 16, 2004 This is Steve Ember with the VOA Special English Agriculture Report. Graphic Image Some chemicals

发表于:2019-01-06 / 阅读(88) / 评论(0) 分类 农业与发展

DEVELOPMENT REPORT - Plumpy'nut Aids Fight Against Hunger By Jill Moss Broadcast: Monday, April 25, 2005 I'm Gwen Outen with the VOA Special English Development Report. Nutriset is a food company in F

发表于:2019-01-30 / 阅读(88) / 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(71) / 评论(0) 分类 万物简史