說溜了嘴slip of the tongue

slip of the tongue
    說溜了嘴
    slip, in this slang, means accidentally reveal （a secret, etc）; say something casually，偶然泄露（秘密等）；無意中說出（某事）。
    單一個slip就有泄露秘密的意思，我們來看例句：
    She let slip that she had not paid her tax.
    她偶然說出她還沒交稅呢。
    注意用法：let something slip that… / let slip that…
    tongue舌頭。不知大家是否還記得以前講過一個“at the tip of one's tongue”？意思是“話到嘴邊，差點說出”。
    這里，slip of the tongue意思是說溜了嘴。我們來看它的用法：
    The mayor really made a slip of the tongue!
    市長可真是說溜了嘴了！