By Caty Weaver Broadcast: July 25, 2003 This is Bill White with the VOA Special English Environment Report. Researchers say they have found a way to reduce the cost of some 1)fuel cell production. The

发表于:2018-12-01 / 阅读(104) / 评论(0) 分类 VOA2003(下)-环境与健康

第三篇 内分泌系统 Section 3 Endocrine System amine precursor uptake and decarboxylation cell 摄取胺前体脱羧细胞 diffuse neuroendocrine system 弥散神经内分泌系统 endocrine gland 内分泌腺 endocrine system 内分泌系统 hormone 激素 hypophysis 垂体 ovary

发表于:2018-12-05 / 阅读(189) / 评论(0) 分类 医学英语

Common Chemical May Damage Teeth A chemical compound thats been linked to a number of health problems in animal studies may also damage tooth enamel in humans. BPA is found in many resins and plastics that people use everyday, such as water and baby

发表于:2019-01-14 / 阅读(60) / 评论(0) 分类 VOA标准英语2013年(六月)

WASHINGTON, Aug. 4 (Xinhua) -- Researchers have found a way to turn mouse embryonic stem cells into sperm and this finding opens up new avenues for infertility research and treatment, according to astudy published Thursday in the online edition of jo

发表于:2019-02-04 / 阅读(119) / 评论(0) 分类 英语新闻

Turn Off Your Cell Phone 关掉你的手机 We went to the movie the other night. I sat in an aisle seat as I usually do, because it feels a little roomier. Just as the feature was about to start, a blonde from the center of the row got up and starte

发表于:2019-02-07 / 阅读(163) / 评论(0) 分类 趣味英语

WASHINGTON, May 11 (Xinhua) -- Researchers at Brigham and Women 's Hospital (BWH), a teaching affiliate of Harvard Medical School, have identified(鉴定) a human lung stem cell that is self-renewing and capable of forming and integrating multiple bi

发表于:2019-02-18 / 阅读(119) / 评论(0) 分类 英语新闻