1、Boy, why have you got cotton-wool in your ear? Is it infected? No, sir, but you said yesterday that everything you told me went inone ear and out the other, so I am trying to stop it.“孩子，你为什么用棉花塞住耳朵？它感染了吗？”“没有，老师。可是你昨天说你告诉我的知识都是一个耳朵里进，一个耳朵里出...
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