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President Bush Discusses Protect America Act
February 13, 2008 THE PRESIDENT: Director, thank you for joining me. Good morning. At this moment, somewhere in the world, terrorists are planning new attacks on our country. Their goal is to bring de
苏珊沃西基2014在约翰霍普金斯大学(3)
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TED演讲:个体DNA检测的时代来了(1)
Imagine that you're a pig farmer. You live on a small farm in the Philippines. 想象你是一个养猪户。你住在一个菲律宾的小农场。 Your animals are your family's sole source of income -- as long as they're healthy. 你的牲口是家庭唯一的收入来