It's been 40 years since then, 从那时到现在 已经过了40年 and 20 years since Melinda and I were married. 我和梅琳达结婚也已经20年了 We are both more optimistic now than ever. 我们现在仍然坚持着这份乐观 甚至更甚于当年 But on our journey, our
So actually there is a Big Brother. But he's not a malevolent fiction, he's actually all of us and he lives in our search engines. So no matter how many times I do the calculations, I come up
Lincoln HallUnion League of PhiladelphiaPhiladelphia, Pennsylvania 10:38 A.M. EST THE PRESIDENT: Good morning. Welcome to my hanging. (Laughter and applause.) Thank you for coming and thank you for yo
Last year I showed these two slides so that demonstrate that the arctic ice cap, 去年我给各位展示了两个关于北极冰帽的演示， which for most of the last three million years has been the size of the lower 48 states, has shru
