Placebo Effect Update

By Nancy Steinbach Broadcast: November 19, 2003 This is Phoebe Zimmermann with the VOA Special English Health Report. When scientists want to test the effectiveness of a new drug, they usually divide

SSS 2011-05-23

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电信专业英英词典V

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CNN 2012-02-13

Ambassador Rice ,the second youngest person to hold that position.She's the first African American woman to be America's representative to the United Nations so she did perfect in the theme of this year's Black history month,black woman in the Americ

NPR 2009-08-01

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VOA慢速英语20060815b

SCIENCE IN THE NEWS - Rethinking the Personal Computer in a World That Centers on the InternetBy Caty Weaver and produced by Mario Ritter Broadcast: Tuesday, August 15, 2006 VOICE ONE: This is SCIENCE

微电子辞典-1

Abrupt junction 突变结 Accelerated testing 加速实验 Acceptor 受主 Acceptor atom 受主原子 Accumulation 积累、堆积 Accumulating contact 积累接触 Accumulation region 积累区 Accum

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