By Leta Hong Fincher Washington 29 November 2007 A team of U.S. and British researchers have unveiled a new map of Antarctica that they say will revolutionize research on the frozen continent and contribute to a deeper understanding of climate change

发表于:2018-12-08 / 阅读(32) / 评论(0) 分类 VOA常速英语2007年(十一月)

Forcing Electrons into Superconducting Line In a study in the journal Nature researchers created a pseudo gap, in which electrons in superconducting materials line up just before flowing resistance-free. Sonya Buyting reports Imagine a world with lev

发表于:2019-01-02 / 阅读(150) / 评论(0) 分类 60秒科学

众所周知,肥胖有害健康。人们常说,肥胖会引发各种各样的内科疾病:胆固醇过高,胰岛素抵抗,还很可能患糖尿病和心脏病。不过,德州大学西南医疗中心的科学家们提出了不同意见。他

发表于:2019-01-02 / 阅读(77) / 评论(0) 分类 60秒科学

Scientists Say Fast Food Heightens Risk of Diabetes 科学家称速冻食品使糖尿病机率增加 A new study has found that people who eat fast food are much more likely to develop insulin resista

发表于:2019-01-03 / 阅读(31) / 评论(0) 分类 VOA2005(上)--环境科学探索

1387 、 电木 Bakelite 1388 、 电玉;醛树脂 ureaformaldehyde(UF) 1389 、 电池 cell 1390 、 电池组 battery 1391 、 电位;电势 electricpotential 1392 、 电位计 potentiometer 13

发表于:2019-01-03 / 阅读(51) / 评论(0) 分类 英文名句短语

This is Valentines Day and this morning, we have a few words about love and money. According to research from a major credit card company, the average man spends about $130 on his sweetheart. Women, spend about half that. For people who want to spend

发表于:2019-01-07 / 阅读(141) / 评论(0) 分类 2006年NPR美国国家公共电台