奥巴马每周之声演讲07.04
'Hello and Happy Fourth of July, everybody. This weekend is a time to get together with family and friends, kick back, and enjoy a little time off. And ...'
奥巴马接受总统候选提名演讲
'"That's the promise we need to keep. That's the change we need right now. So let me spell out exactly what that change would mean if I am President."...'
【视频】奥巴马佛罗里达州演讲
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