And I'm going to imagine this, you can do this too if you like, that I'm going to just take the letter "T" and I'm going to imagine it in mind, 我会想象，如果喜欢你也可以这么做， 我只取这个字母“T"，我要在我的脑海中想象它的形状， and I'm goi
Some in my country fear that China's research and development will overtake America's, but I believe that America and the world will benefit from China's scientific and technological advan
Over the last few weeks, I've been talking a lot about America's economic future. I've told you how I believe we should go about creating strong, sustained growth; how we should pay down our long-term
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
