slip of the tongue

　　说溜了嘴

　　【世博精解】

　　slip, in this slang, means accidentally reveal (a secret, etc); say something casually，偶然泄露(秘密等)；无意中说出(某事)。

　　单一个slip就有泄露秘密的意思，我们来看例句：

　　She let slip that she had not paid her tax.

　　她偶然说出她还没交税呢。

　　注意用法：let something slip that…/ let slip that…

　　tongue舌头。不知大家是否还记得以前讲过一个“at the tip of one's tongue”？意思是“话到嘴边，差点说出”。

　　这里，slip of the tongue意思是说溜了嘴。我们来看它的用法：

　　The mayor really made a slip of the tongue!

　　市长可真是说溜了嘴了！