单词：Tetraplodon
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When it was all over, Osa sat down. And I must confess that my own knees felt a trifle wobbly. 当一切都结束的时候，奥萨坐了下来。我必须承认，现在我有些站立不稳。 It had been a close call, and I would probably not have
美国小学英语教材6
If you imagine the 4,500-million-odd years of Earth's history compressed into a normal earthly day, 请你想像一下。把地球的45亿年历史压缩成普通的一天。 then life begins very early, about 4 A.M., with the rise of the first simpl
万物简史
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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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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And it'll be a permanent presence 这将会是长程计划 where each mission adds more capability and eventually 每次登月任务都会增强我们在月球上的作业效能 we'll just have people living there. 最后会有人住在月球上 This
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