音标：[,tetrә'tɔmik] ；

四原子的

a. Consisting of four atoms; having four atoms in the
molecule, as phosphorus and arsenic.
a. Having a valence of four; quadrivalent; tetravalent;
sometimes, in a specific sense, having four hydroxyl groups, whether
acid or basic.

SSS 2012-01-24

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(415) / 评论(0)

Scientific American(一)月

专业术语—中草药成分英汉对照词汇T1

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

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医务英语

音乐咖啡厅:Eternal Flame-Atomic Kitten

close your eyes give me your hand, darling do you feel my heart beating? do you understand? do you feel the same? am i only dreaming? is this burning an eternal flame? i believe it's meant to be, darling i watch you when you are sleeping you belong

发表于:2019-01-07 / 阅读(431) / 评论(0)

音乐咖啡厅

音乐咖啡厅:If you come to me-Atomic Kitten

英文歌词: so long ago i didnt have a care about me i didnt know my right from wrong but now i know that you left got love around me you know it makes me feel so strong baby if you turn around and prove to me its real maybe we can work it out cos thi

发表于:2019-01-09 / 阅读(388) / 评论(0)

音乐咖啡厅

澳洲新闻 (ABC新闻快递) 2015-07-17

Leading the news, the families of those killed on flight MH17 will gather in Canberra today for a national service to mark the first anniversary of the disaster. The plane was shot down over Ukraine, killing almost 300 people, including 38 Australian

发表于:2019-01-16 / 阅读(299) / 评论(0)

澳洲ABC新闻快递2015年

2007年VOA标准英语-Atomic Scientists Warn World Moving Closer to N

By Stephanie Ho Washington 17 January 2007 watch Doomsday Clock report An international group of atomic scientists is warning of the dual threats to the world posed by nuclear weapons and climate change. VOA's Stephanie Ho reports from Washington. K

发表于:2019-02-01 / 阅读(426) / 评论(0)

2007年VOA标准英语（一月）

Federer beats Davydenko to set up Tomic meeting

MELBOURNE, Jan. 17 (Xinhua) -- Wimbledon champion Rofer Federer advanced to the third round at the Australian Open with a 6-3, 6-4, 6-4 victory over Russian Nikolay Davydenko here on Thursday. The two 31-year-olds know each other well, on court at le

发表于:2019-02-03 / 阅读(440) / 评论(0)

英语新闻

万物简史第212期:把铅撵出去(1)

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(435) / 评论(0)

万物简史

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