单词：Stiltetra
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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
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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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Grafting is a way to produce plants from pieces of existing plants instead of seeds. Branches or buds are cut from one plant and placed on a related kind of plant. The branch or bud that is grafted is called the scion. The plant that accepts the graf
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By Nico Colombant Bokoni 08 February 2008 While former Liberian president, Charles Taylor, is being tried in The Hague for alleged war crimes in Sierra Leone, his imprint is still being felt in the neighboring country of Guinea as well. Some of his f
VOA常速英语2008年（二月）
China says a multi-billion dollar oil deal with Iraq is still being negotiated. This contradicts reports last week from Iraqi officials, who said the deal had been signed. Daniel Schearf reports from Beijing. China's Foreign Ministry on Thursday sai
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Lesson 231 You owe me one! 1.You owe me one!你欠我一个人情！ 2.I stil lowe for the car.我还没付清 这辆车的钱。 3.I owe ou an apology.我该向你道歉。 4.I owe my parents a lot.我十分感激 父母。 5.I owe you five dollars.我
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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
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