I've been thinking a lot about the world recently and how it's changed over the last 20, 30, 40 years. 最近我常常思考我们的世界以及它在过去的20，30，40年里经历了何等的转变。 Twenty or 30 years ago, if a chicken caught a cold and sne

奥巴马每周演讲2013-06-29：Confronting the Growing Threat of Climate Change 中英对照演讲稿 奥巴马在例行的周六演说中告诉美国人民，他几天前推出以应对日益严重的气候变化威胁问题的计划。他的计划将减少碳污染，保护我们的国家，免遭气候变化的影响，并引领世界在气候变化灾害中协调一致。 Hi everybody. A few days ago, I

First place I'd like to take you is what many believe will be the world's deepest natural abyss. 我要带大家去的第一个地方是一个天然的深渊，许多人相信它将会被证明为世界最深之渊。 And I say believe because this process is still ongoin

The President welcomes dozens of doctors from all over the country to the White House, and commends doctors in general as those “who know the health care system” and for being “some of the people who

President's Radio Address THE PRESIDENT: Good morning. This weekend, Americans are celebrating the anniversary of our Nation's independence. Two hundred and thirty-two years ago, our Founding Fathers