2008年美国总统竞选辩论(第三场) 参考文本： SCHIEFFER: Good evening. And welcome to the third and last presidential debate of 2008, sponsored by the Commission on Presidential Debates. I'm Bob Schieffer of CBS News. The

Now, I'm an ethnobotanist. 我是名民族植物学家。 That's a scientist who works in the rainforest to document how people use local plants. 我在热带雨林工作，记录人们如何使用当地植物。 I've been doing this for a long time,an

President Obama: Hello, everybody! Hello, everybody. Welcome to the White House. Michelle and I want to be the first to wish all of you a happy Hanukkah. I figure we've got to be first because we're a

WEEKLY ADDRESS: Expanding Overtime Pay (May 21, 2016) 奥巴马每周电台演讲：增加加班工资 Hi everybody. Last summer, I got a letter from a woman named Elizabeth Paredes from Tucson, Arizona. Elizabeth is the mom of a 3-

On Wednesday, the President honored math and science educators at the White House and announced several new partnerships and programs in a continuation of the “Educate to Innovate” campaign, an initia