April 4, 2007 1:19 P.M. PDT THE PRESIDENT: Thank you, all. (Applause.) I've been waiting all day to say, Hoo-ah! AUDIENCE: Hoo-ah! THE PRESIDENT: Thank you for greeting me. General Cone, thanks. I app

美国当选总统、民主党人奥巴马1月20日在美国国会大厦西侧的露天平台上正式宣誓就任美国第44任总统。宣誓就职后，奥巴马发表就职演说。演说中，奥巴马呼吁全体美国民众端正心态，努力提高公民责任感，为振兴国家贡献自己的力量。以下是就职演说的精彩语录： 关于布什 我感谢布什总统为我们国家作出的服务，感谢他在过渡期间所展示的慷慨与合作。 I thank President Bush for his servi

Good morning everyone.This past week we've seen the best and the worst of humanity.The heinous terrorist attacks in Paris and Beirut, in Iraq and Nigeria.They showed us once again the depths of th

Now, coumarin is a very common thing, a material, in fragrance which is derived from a bean that comes from South America. 香豆素是香水中一个十分平常的原料，从来自南美的豆子中提炼出来的。 And it is the classic synthetic aroma chemic

July 26, 2007 9:11 A.M. EDT THE PRESIDENT: Thank you very much. Thanks for the warm welcome. It's good to be back with my friends here at ALEC. Kenny, thanks. He was a silver-tongued devil when he was