And if we move back again, here, and we put on trails on them, like this, 我们再回到过去，给每个球画出运动的轨迹， you can see again that the speed of development is very, very different, 可以看到，发展速度的差距非常大， and the countri

I want to wish Jewish Communities, within Britain and around the world, a happy and peaceful Passover. This is a time when families and friends gather round the Seder table to remember the struggles o

REMARKS BY THE PRESIDENT AT WHITE HOUSE CORRESPONDENTS' ASSOCIATION DINNER May 9, 2009 Washington Hilton Washington, D.C. 9:56 P.M. EDT THE PRESIDENT: Thank you. Thank you, everybody. Good evening. Yo

Earlier today in Maryland, President Obama spoke about the importance of clean energy for the country's future. Whether it’s nuclear energy, or solar or wind energy, if we fail to invest in the techno

陈冯富珍总干事在2017年人工智能惠及人类全球峰会开幕致辞。（中英对照） Opening Remarks at the Artificial Intelligence for Good Global Summit “人工智能惠及人类全球峰会”开幕致辞 Dr. Margaret Chan, Director-General of the World Health Organization 世界卫生组