2009-10-04
[03-20] 奥巴马演讲全文"We the people, in order to form a more perfect union." Two hundred and twe...
2009-10-03
2009-10-02
2009-10-03
Steve Jobs: Commencement Address at Stanford University Thank you. I'm honored to be with you ...
2009-10-03
2009-10-03