单词：Berkmycin
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Millions More Children to Receive Vaccines More than one million children die each year from severe diarrhea and pneumococcal disease. Today (Tuesday), the GAVI Alliance announced an expanded campaign against the two leading killers of children world
VOA标准英语2011年(九月)
Time now for business news. There was plenty of bad news on the economic front yesterday. Stock prices slid while the cost of a barrel of oil rose by more than two dollars and forty cents. One reason for the moves was a steep drop in the value of the
2009年NPR美国国家公共电台7月
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JUDY WOODRUFF: Now trading in Ben Franklins for Norman Rockwells. Economics correspondent Paul Solman visits one New England county that prints its own money. It's part of his ongoing reporting Making Sense of financial news. PAUL SOLMAN: The Berkshi
PBS访谈商业系列
US Scientists Expand Scope of HIV Vaccine Study The worlds largest ongoing HIV vaccine study has been expanded to consider multiple ways a vaccine might boost immune response to the AIDS virus. The U.S. Institute of Allergy and Infectious Diseases (N
VOA标准英语2011年(八月)
Broadcast on Coast to Coast: November 7, 2002 Rebroadcast on VOA News Now: November 10, 2002 AA: I'm Avi Arditti with Rosanne Skirble, and this week on WORDMASTER -- slang and idioms in American politics. RS: Tuesday was Election Day, and Slangman Da
词汇大师(Wordmaster)
By Jessica Berman Washington 11 May 2006 French researchers at the Sanofi Pasteur Institute say they have developed a bird flu vaccine that, so far, appears to be safe and effective in humans. But obs
2006年VOA标准英语（五月）