The AIDS epidemic offers an example. The broad goal, of course, is to end the disease. The highest-leverage approach is prevention. The ideal technology would be a vaccine that gives lifetime immunity
In our day, we have digitization. That strips all the physical mass out of information, 现在我们有了数据电子化。这把信息从成堆成堆的状况下解救出来， so now it's almost zero cost to copy and share information. 所以现在拷贝分享信息已近乎零花费。 Our
February 28, 2007 2:12 P.M. EST THE PRESIDENT: One of the most enjoyable things I do as the President is to hear stories of my fellow citizens -- stories of compassion, stories of care. I just talked
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
Hello, everybody! Everybody, please have a seat. 大家好!大家请就坐。 Welcome to the White House, and congratulations to the Super Bowl Champion New York Giants. 欢迎来到白宫,并对超级碗冠军纽约巨人队表示祝贺。 We’ve got some members
