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Here's how shape works in normal receptors. 这里展示的是形状是如何对通常的感受器起作用的。 You have a molecule coming in, it gets into the protein, which is schematic here, 一个分子进来，进到蛋白质里，图中所示意的就是蛋白质， and it causes this thin
May 8, 2007 4:45 P.M. EDT PRESIDENT BUSH: I appreciate very much the President of Haiti joining us here in the Oval Office. Mr. President, welcome. I thank you for your courage. I thank you for having
PRESIDENT OBAMA: Prime Minister Singh, Mrs. Gursharan Kaur, members of the Indian delegation（代表团） -- on behalf of（代表，为了） Michelle and myself, it is a great pleasure to welcome you to the White House.
