I have personally met thousands of heroines in countries around the world. Women defending human rights. Women challenging authoritarians. Women rejecting injustice. Again and again, I have been inspi

美国第一夫人Michelle Obama在民主党全国大会DNC上的演说完整版及英语演讲稿。米歇尔一展母仪天下风范，现场观众欢呼的欢呼，鼓掌的鼓掌，抽泣的抽泣，抹泪的抹泪，感动的噼里啪啦一塌糊涂。这个“皇后”确实可以对内对外。精辟的话如“今天，当我们面对的挑战显得铺天盖地——甚至无法战胜的时候——让我们永远不要忘记，

So we don't have people on Mars right now, but we do have rovers. 我们现在并没有人类生活在火星，但是我们有漫游者探测器。 And actually right now, on Curiosity, it is 6:10 in the morning. 现在，好奇号漫游者的时间是早上6点10分。 So, 6:10 in the mor

Earlier today, President Obama discussed the 2011 budget, reflecting on the challenges for the country and the steps the administration is taking to meet them. While acknowledging that the inherited $

Now all of us must realize this is not a spectator's sport, when I was just sitting here watching "amazon.com". Every institution and every entity must grab with this issue at the highes