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

Antony of the band Antony and the Johnsons cut his teeth in New York's after hours cabarets and backing up rocker Lou Reed.His current group has a new album called I Am a Bird Now.Music critic Jerry Dannemiller has a review. OK,right up front.The fir

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Dr. Gary Smith heads the Center for Injury Research and Policy at Nationwide Children's Hospital in Columbus, Ohio. He and other pediatricians are calling for warning labels on foods that are a high-risk for choking for children. Every week, children

发表于:2019-01-13 / 阅读(35) / 评论(0) 分类 VOA标准英语2010年(二月)

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

By Saqib ul-Islam Washington 12 October 2009 Amreeka's stars, pictured on the movie's promotional poster What is it like for a mother and her teenage son to settle in America? And what if they are Palestinian and their arrival coincides with the ons

发表于:2019-02-20 / 阅读(105) / 评论(0) 分类 VOA标准英语2009年(十月)