语音讲解：
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　　定义：

　　stop at a certain point, limit

　　在特定点停下来；限制

　　例句：

　　If he wants to go out with his friends, that's fine. But when he starts coming home after 11: 00 a.m., that'sswheresI draw the line.

　　如果他要和朋友出去,是可以的。但若他上午十一点才开始回家,则是我所不允许的。