也许你以前曾经买过那些那些摺纸玩具，他们能够做出洋娃娃或天鹅？TED 的研究会员 Manu Prakash 和他的团队成功做出像折纸一样简单的显微镜。讲者在这段影片中提供了让人惊奇的示范，并告诉我们这个装置将如何对开发中国家的健康问题造成影响。另外，这项技术也能够让所有事情都变成有趣的手作科学实验。 Manu Prakash在Ted英语演讲：只要50美分,就能拥有如折纸般的显微镜也许你以前曾经买过
For you will be part of that leadership 毕竟你们以后都将成为军队领导中的一员 First, let me repeat a principle I put forward at the outset of my presidency: 首先 请让我重申我在总统任期伊始便已明确的原则 The United States will use military fo
Martin Luther King I Have a Dream by Martin Luther King, Jr. I am happy to join with you today in what will go down in history as the greatest demonstration for freedom in the history of our nation. F
Weekly Address: A Conversation About Addiction (May 14, 2016) 奥巴马每周电视讲话：总统呼吁人们健康生活 走出毒瘾阴霾 Hi, everybody. I've got a special guest with me this week-Macklemore. For those of you who don't share the sam
