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I want to start by doing an experiment. I'm going to play three videos of a rainy day. 我想用一个实验来开始我的演讲。我将给你们播放三段雨天的视频。 But I've replaced the audio of one of the videos, and instead of the sound of rain
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And it seems to me that the first question 我的看法是, is entirely a biology question, 第一个问题完全是生物学的问题, and it's extremely hard to answer. 这是非常难回答。 One has to be very speculative, 一个人必须非常投机, and many of
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President Bush Visits National Fallen Firefighters Memorial
October 7, 2007 THE PRESIDENT: Thanks for the warm welcome. David, thank you very much for your introduction. Nothing better than being introduced by an old fire chief. And I thank you for your servic