介绍:
Lip 唇，嘴唇
We have two lips: the upper lip and the lower lip. If one's two lips are closed, one cannot speak. So it goes without saying that”don't open your lips ”means “don't speak ”.
His lips are sealed . Are his lips really stuck together by wax or glue? No, His lips are sealed when asked about something that he must keep secret. sometimes a top secret is betrayed because it has escaped someone's lips. Then the incident may become a piece of news that is on everybody's lips.
我们有两片嘴唇：上唇和下唇。如果两片嘴唇合起来，就讲不了话。因此，Don't open your lips不消说，意思是叫你别开口讲话。
His lips are sealed. 他的双唇真的用蜡或者用胶水粘住了吗？不是的。有人问到他什么，他想保密的时候，闭口不说就是了。话不经意脱口而出（escape the lips），有时秘密就这样泄露出来。这种事儿就可能会成为众口相传的新闻（on everybody‘s lips）。
