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President Bush Visits Alamo Regional Command Reception Center (Sept. 1, 2008)
THE PRESIDENT: You know, one of the great things about our country is the number of people who volunteer during one of these incidents. Here are some Red Cross volunteers. They are -- they symbolize t
TED演讲:医学的未来?也许是手机上的一个应用程序(4)
Now if you have trouble maintaining your diet,it might help to have some extra imagery to remind you how many calories are going to be coming at you. 如果你不能保持节食,一些图像也许会有助于提醒你食物里有多少热量。 How about enablin
奥巴马讲话 祝福人民感恩节快乐
Hi, everybody. In 1620, a small band of pilgrims came to this continent, refugees who had fled persecution and violence in their native land. Nearly 400 years later, we remember their part in the Amer