5. Turning Your Eyes to China 5. 把目光投向中国 As we all know, in the history of mankind, there appeared the Mesopotamian civilization in West Asia, theancient Egyptian civilization along the Nile in North
THE PRESIDENT: Thank you, everybody. Everybody, please have a seat. I am having so much fun! (Laughter.) It is great to see all of you here for our first White House Science Fair. I have been looking
Great things happen at intersections. 交叉点是个产生奇迹的地方。 In fact, I would argue that some of the most interesting things of the human experience occur at the intersections, 实际上，我想说，人类历史上许多最伟大的事情都发生在交叉点， in
