July 4, 2007 9:21 A.M. EDT THE PRESIDENT: Thank you all. Thanks for the warm welcome. Happy 4th of July. I'm thrilled to be here in Martinsburg. This is the fourth Independence Day that I have spent i

I'm not raising a little boy, like Mike. 我没有抚养过像Mike这样的小男孩儿。 Mike is a little boy in Florida. He's 11 years old, Mike是弗罗里达州的一名小男孩儿，他今年11岁。 and the thing that he loves most in the world is a show calle

Now, 21 billion hours, it's a lot of time. 现在看起来，两百一十亿个小时是很多时间。 It's so much time, in fact, that the number one unsolicited comment that I have heard from people all over the world 真的是很多时间。事实上，我看到的最多的

So this one is a quadcopter. 这是一个四轴飞行器。 It's a small model helicopter. In a way, it's a toy, no? 一个小型的直升机模型。差不多是个玩具吧。 And so this one was military technology a few years ago, and now it's open-source,

Hi everybody. Seven years ago, the American auto industry was on the brink of collapse. Plants were closing. Hundreds of thousands of workers were getting laid off from jobs that had been their ticket