2009年11月16日,美国总统奥巴马在上海科技馆与中国青年对话。
storms. That is why Lincoln could stand up in the midst of civil war and declare
it a struggle to see whether any nation, conceived in liberty, and "dedicated to
the proposition that all men are created equal" could long endure. That is why
Dr. Martin Luther King could stand on the steps of the Lincoln Memorial and