单词：EM specimen penetrator
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This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute. Fingers are pretty nifty. They let you to grab a latte, type on a keyboard, even pull up your pants. But did you ever wonder: where do fingers come from?
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By John Stevenson Washington 02 May 2007 Internationally renowned cellist and conductor, Mstislav Rostropovich, died Friday, April 27 in Moscow at age 80. The great cellist spent much of his life in the United States after he was formally exiled from
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By Ernest Leong Washington, DC 22 December 2006 watch Holocaust Muslims Muslim leaders gathered at the U.S. Holocaust Memorial Museum this week to honor and remember Holocaust victims from World War II. For those attending, the remembrance was movin
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By Marissa Melton Washington 26 May 2007 President Bush has called on Americans to rededicate themselves to the cause of freedom, as the nation remembers its war dead on this Memorial Day weekend. Marissa Melton reports from Washington. In his weekly
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By Kent Klein Washington 20 June 2008 June 26, 2008 marks the 60th anniversary of the Berlin Airlift - one of the biggest humanitarian operations ever, and a turning point in the Cold War. VOA's Kent Klein looks back at the Berlin Airlift, with a ma
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