奥巴马2008年在柏林的演讲：一个团结一致的世界
People of the world – look at Berlin, where a wall came down, a continent came together, and history proved that there is no challenge too great for a world that stands as one. Sixty years after the airlift, we are called upon again. History has led us to a new crossroad, with new promise and new peril.
