Hi, everybody. 大家好！ About a year ago, I promised that 2014 would be a breakthrough year for America. 1年以前我曾向大家许下承诺，2014年是美国的突破之年。 And this week, we got more evidence to back that up. 而本周我们如约履行了这个承诺，有了

Natalie Portman at Harvard Portman was raw and revealing in her speech at her alma mater, Harvard, talking about the dark times she faced at college, coping with depression and feeling like she didn&r

But I want us to reflect a little bit again on negative emissions. 但是我想提醒大家再次对负排放进行反思。 Negative emissions should not be considered a silver bullet, 负排放不应该被当作是万全之策， but they may help us if we continue

Hi, everybody. For millions of Americans, this time of year holds great meaning. Earlier this week, we hosted a Passover Seder at the White House, and joined Jewish families around the world in their

PRESIDENT OBAMA: Prime Minister Singh, Mrs. Gursharan Kaur, members of the Indian delegation（代表团） -- on behalf of（代表，为了） Michelle and myself, it is a great pleasure to welcome you to the White House.