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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 in one 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，所以我要把它堵在里面。 | 
