单词：tris(hydroxymethyl)aminomethane(Tris)
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海豹Kid 英文儿歌
In other countries, women usually take the lead in cabaret. But here in Thailand many feel they are just not the right gender for the job. In Thai society, women are usually very prim and proper, this profession requires them to be outgoing, cheeky
国家地理2007年
This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. In 1953 a student named Stanley Miller did an experiment showing that the simple chemicals present on the early Earth could give rise to the basic buildi
Scientific American(十)月
Low-cost airlines have changed the travel business. Carriers like Southwest and Jetblue serve fewer cities than traditional airlines and offer fewer perks to passengers. They force the bigger carriers like United and Delta to change their business pr
2005年NPR美国国家公共电台
HAVANA, Jan. 2 (Xinhua) -- The Australian swimmer Chloe McCardel announced her intentions to swim across the Florida Straits without the protection of an anti-shark cage, Cuban media highlighted here Wednesday. According to Radio Havana Cuba, McCarde
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19 The Rise Of Life 第十九章 生命的起源 In 1953, Stanley Miller, a graduate student at the University of Chicago, took two flasksone containing a little water to represent a primeval ocean, 1953年，芝加哥大学的研究生斯坦利米勒拿
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