单词：toxinum staphylococcus detexicatum
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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. As long as there have been mice, people have sought a better mousetrap. And since we figured out that bacteria can make us sick, weve searched for better
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THIS IS AMERICA - October 7, 2002: Unusual Museums By Jerilyn Watson VOICE ONE: The United States has thousands of museums. Some museums show large collections of art. Some show objects about science
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D Dahurian Rhododendron Leaf P.E 满山红提取物 Daidzein 大豆甙元 Daidzin 大豆甙 Dandelion P.E 蒲公英提取物 Daphnetin 瑞香素 Daphnin 瑞香甙 Daucosterol 胡萝卜甙 Dauricine 蝙蝠
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By Jill Moss THIS IS AMERICA -July 29, 2002: National Museum of American History VOICE ONE: The Smithsonian Institution in Washington, D.C. collects, cares for and protects more than one-hundred-forty
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THIS IS AMERICA -May 20, 2002: BO Railroad Museum By George Grow VOICE ONE: The American city of Baltimore, Maryland is home to the Baltimore and Ohio Railroad Museum. Museum officials have organized
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By Joseph Mok Washington, DC 11 July 2006 watch Whitney Museum report New York's Whitney Museum of American Art this summer celebrates its 75th anniversary - along with its every-other-year exhibit, called Biennial 2006. The museum is a leading advo
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