It is an honor to be here and to say to the Yale College Class of 2008： you did it; you came through; from all of us to you: congratulations. 我深感荣幸能够站在这里为耶鲁大学2008届毕业生发表演讲。你们成功了，你 们走过来了；我们所有人都向你们表示祝贺。

So what if there were a highly obvious problem right in front of you? 假如有一个非常明显的问题摆在你面前， One that everyone was talking about, one that affected you directly. 一个所有人都在讨论的，直接影响你的问题。 Would you do everythi

What is the one sentence summary of how you change the world? Always work hard on something uncomfortably exciting! 如何用一句话总结你该如何改变世界，那就是在那些让人极度兴奋的事情上发奋努力吧！ As a PhD student, I actually had three proje

In his first weekly address since being sworn in as the 44th president of the United States, President Barack Obama discusses how the American Recovery and Reinvestment Plan will jump-start the econom

But no president, no Congress, no government, can undertake this mission alone. 任何总统、任何国会、任何政府都不能单独完成这一使命。 My fellow Americans, you, too, must play your part in our renewal. 同胞们，在我国复兴的过程中，你们也必须发挥作用。 I