As one of her chief responsibilities and greatest passions, the First lady has dedicated herself to helping our children grow up healthy and reversing the alarming childhood obesity trend -- so the Pr

Last year, Congress also passed, and I signed, the landmark V.A. Accountability Act. 去年，国会通过了且我签署了标志性的《退伍军人服务问责法案》。 Since its passage, my administration has already removed more than 1,500 V.A. employ

You'll see here that some light from behind it gets lensed, and some light does a loop-the-loop around the entire orbit of the black hole. 你现在看到的是在黑洞后面的一些光透过它，有些光的确会一直绕着黑洞转。 But when you get enoug

10.Franklin Delano Roosevelt Pearl Harbor SPeech Declaration of War 10.富兰克林·德拉诺·罗斯福要求国会对日本宣战演讲 To the Congress of the United States: 副总统先生、议长先生、各位参议员和众议员： Yesterday, Dec. 7, 1941 - a date which will l

THE PRESIDENT: Hello, everybody. Good morning, everybody.Let me begin by pointing out that although Washington is supposed to be a town of sharp elbows, it’s getting a little carried away. For t