单词：hydroxyl radicals
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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. If youve ever popped open a jar of the pickled fish, you know that herring like to stick together. Actually, its something they do naturally, even before
Scientific American(三)月
For astronomers who study the large-scale structure of the universe, dwarf galaxies have proven quite vexing. Because the leading model of cosmology has been unable to account for their relative lack of substance. Now scientists writing in the journa
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1. collusion /kəˈlu:ʒən/ -- (literally, playing together) secret agreement for a fraudulent purpose; conspiracy; plot It was not known whether the price increases resulted from higher costs or from collusion among the producers. 不知道价格的上
突破英文词汇
He likes the rain. Rain makes puddles. He likes puddles. He jumps into puddles. He jumps across puddles. He slides on his back in puddles. He sits in puddles. He gets wet in puddles. His shoes get wet. His clothes get wet. He gets dirty. His clothes
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AS IT IS 2014-07-24 Former General Challenges Widodo's Victory in Indonesia 印尼前将军挑战选举结果 The unsuccessful candidate in the Indonesian presidential election has decided to challenge -- or officially dispute -- the result. Former A
2014年VOA慢速英语(七)月
What is extraordinary from our point of view is how well it turned out for us. If the universe had formed just a tiny bit differentlyif gravity were fractionally stronger or weaker, if the expansion had proceeded just a little more slowly or swiftlyt
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