单词：column fractionation
单词：column fractionation 相关文章
This is Whats Trending Today A small shark that was stolen from an aquarium in Texas has been found and safely returned. Miss Helen is a 40-centimeter-long gray horn shark. She spends her time in a touch tank at the San Antonio Aquarium, where visito
2018年VOA慢速英语(八)月
WASHINGTON, June 23 (Xinhua) -- Last month was the hottest May since record keeping began in 1880, the U.S. National Oceanic and Atmospheric Administration (NOAA) said Monday. 图片1 The combined average temperature over global land and ocean surfac
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New research suggests agriculture has greatly increased the amount of dust blowing off of West Africa, the world's largest source of atmospheric dust, and may have been one factor driving the decrease in rainfall in the region over the past several c
VOA标准英语2010年(七)月
A diamond worth ?12,000 was shot into space this morning - and whoever finds it when it lands back on earth gets to keep it. 今天早晨一颗价值1万2千英镑的钻石被送入太空，在它落地后，谁能找到它，它就归谁。 A diamon
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Have you ever been floating in a swimming pool, all comfy and warm, 你是否曾经浮在游泳池里，感觉非常惬意，暖洋洋得， thinking, Man, it'd be cool to be an astronaut! 想着，天啦，当一名宇航员太爽了！ You could fl
TED演讲教育篇
Science and technology. 科技。 Geoengineering. 地理工程学。 Implicit promises. 包含着承诺。 A geoengineering experiment has come unstuck. But there will be more. 地理工程试验取得突破。可期待更多。 FOR the past few year
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