This ability to make copies of DNA, as simple as it sounds, has transformed our world. DNA的这种复制能力听起来很简单，却改变了我们的世界。 Scientists use it every day to detect and address disease, to create innovative medic

My friends: I want to talk for a few minutes with the people of the United States about banking to talk with the comparatively few who understand the mechanics of banking, but more particularly with t

Or that when I get nervous, my hands start shaking and I'm really self-conscious about it. 或者我一紧张就会手抖，我还非常清楚这一点。 Or that my fly has been open this entire time and all of you noticed but I didn't, but

When I was 19, I was in a really bad car accident. 在我19岁的时候，发生了一场很严重的车祸。 I was thrown out of a car, rolled several times. I was thrown from the car. 我整个人飞出车外，滚了好几圈。我是被扔出车外的。 And I woke up in a head in

In Egypt, I'm told, it's rude to ignore a stranger, 在埃及，有人告诉我，无视陌生人是十分没有礼貌的做法， and there's a remarkable culture of hospitality. 并且有很多关于友善的文化。 Strangers might ask each other for a sip of water. 陌生人之间可以