The left ear with the right ear

　　"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."

　　左耳朵與右耳朵

　　“孩子，你為什么用棉花塞住耳朵?它感染了嗎?”

　　“沒有，老師。可是你昨天說你告訴我的知識都是一個耳朵里進，一個耳朵里出，所以我要把它堵在里面。”