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(62) / 评论(0) 分类 医务英语

AIDS Drugs Offer Hope of Normal Lifespan in Africa Over the last 30 years life expectancy rates in Africa plummeted, as HIV/AIDS claimed millions of lives. But a new study says antiretroviral drug treatment can dramatically reverse that trend. Profes

发表于:2019-01-13 / 阅读(35) / 评论(0) 分类 VOA标准英语2011年(七月)

ELISE HU, HOST: This month, diners in Toronto were treated to a four-course meal at a pop-up restaurant called June's. In addition to the food, the chefs at June's also served a message which they wore on their shirts - break bread, smash stigma. The

发表于:2019-01-16 / 阅读(50) / 评论(0) 分类 2017年NPR美国国家公共电台11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(48) / 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(73) / 评论(0) 分类 万物简史