单词：hydroxyl exponent
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This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute? On June 4th we told you about iron snowflakes on Mercury. Today we have some radical news about the atmosphere of Venus. Literally, a radical is a molecule that reacts e
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Erythromycin,红霉素 Azithromycin,阿奇霉素 Clarithromycin,克拉霉素 Fluoroquinolones and their derivatives （e.g. levofloxacin）,多西环素（如：脱氧土霉素） Tetracyclines （e.g
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分集介绍：导数，商数，正弦和余弦 Derivatives.of.products.quotients.sine.cosine
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Don Gonyea: John Kenneth Galbraith, economist, diplomat, prolific author, Harvard professor, and iconoclast , died yesterday in Cambridge, Massachusetts. He was 97 years old, born in Canada to a farming family, Galbraith became the country's leading
2006年NPR美国国家公共电台
A new film about the adventures of Tintin, the Belgian boy reporter, opens across Europe this week. 上周，一部讲述比利时少年记者丁丁历险故事的新电影在欧洲地区上映。 The movie, directed by Steven Spielberg, faithfully d
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So if Charles I was collecting, in a sense, to self-aggrandise and to make a statement about himself, whereas George III was collecting because he thought that's what a king should do, because he loved art? Yes. He would never have commissioned an im
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After Luiz Gonzaga died in 1989, a statue was erected just outside Recife, the capital of his home state, Pernambuco. It marks the start of the Luiz Gonzaga Highway. Gonzaga had reminded Brazils city dwellers of the depth of music that exists out in
自然百科2012年
In Rio, African rhythms began to mix with European styles. And it was at the house of a Candomble practitioner, a priestess named Tia Ciata, Auntie Ciata, that the first song widely recognized as Carioca samba, samba from Rio, was performed in 1916.
自然百科2012年
Carmen Miranda came to symbolize Brazil for the outside world, though she had been criticized at home for becoming too westernized. Her sophisticated light-hearted songs had little to do with the everyday struggles of many ordinary Brazilians. They f
自然百科2012年
Before I talk about that, 谈到这之前 I've written down at the bottom there 我在底下标出了 the slope of this curve, this straight line. 这条曲线的斜率，即这条直线 It's three-quarters, roughly, 大约为3比4 which is less than
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The renowned Taiwan cartoonist Zhu Deyong - an exponent of the hand-drawn artform - is presenting sketches showing his process to a finished product. Zhu Deyong has attended the festival several times, but this is the first time he has had an entire
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托福8000词汇怎么背?新东方托福考试网分享托福熟词僻义词汇总结：，让我们一起背单词吧。 address v. 应付，处理(问题等) aging n. n陈酿 appropriate v. 擅用，挪用，占用，盗用 article n. 物品;制品，
雅思英语