单词:ferromagneto elastic
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IN THE NEWS - John Kerry Chooses John Edwards for Vice President By Cynthia Kirk Broadcast: Saturday, July 10, 2004 This is Bob Doughty with In the News, in VOA Special English. The Democratic Nationa
粮食的迫切需求意味着农业已成为导致气候变迁、生物多样性丧失及环境破坏的最大因素。在 TEDxTC中,Jonathan Foley阐述为何我们亟需着手进行 Terraculture-即全球耕作。
KELLY MCEVERS, HOST: Lots of industries acknowledge they have a diversity problem. Maybe it's with age or gender or race. Our Planet Money podcast wondered, how exactly does an industry begin to change itself? And reporter Kenny Malone says the answe
在TED U 2009的这个简短的演讲中,Jonathan Drori鼓励我们保护生物多样性 -- 从一颗颗种子做起。他提醒我们要保护人类赖以生存的植物,同时他也给大家描述了千年种子库这样一个美好的远景,在
By Jim Malone Washington 15 May 2008 Democratic presidential contender Barack Obama won the endorsement of a key former rival Wednesday, one day after being trounced in the West Virginia primary by Hillary Clinton. VOA National correspondent Jim Malo
By Jim Fry Washington 07 September 2007 The man the Democratic Party nominated for vice president in 2004 is running for president now. John Edwards of North Carolina -- the son of a mill worker, a successful trial lawyer and former U.S. senator -- f