let the cat out of the bag

泄露秘密

例句与用法：

She let slip some remarks about my daughter.

她无意中说出了一些有关我女儿的话。

She will never let slip a chance to study abroad.

她绝不会错过出国学习的机会。

She let slip a chance to work abroad.

她错过了出国工作的机会。

She let slip that she had not paid her tax.

她偶然说出她还没交税呢。

详细释义：

泄漏秘密

The criminal was hiding away from the police, but a small boy let the cat out of the bag when he told the police that there was a man in the house.

罪犯正躲避警方的搜查, 但一位小男孩泄漏了秘密, 他告诉警方屋里有一个男人。