I accidentally let the cat out of the bag about the surprise party.

我不小心透露了惊喜派对的消息。

Once she let the cat out of the bag, everyone knew what was planned for the wedding.

一旦她透露了秘密，大家就都知道了婚礼的计划。

He was so excited that he let the cat out of the bag before the meeting started.

因为太兴奋了，他在会议开始前就泄露了消息。

It's best to keep this information private until the right time; don't let the cat out of the bag too soon.

最好在合适的时机保持这些信息私密；不要太早泄露秘密。

When he let the cat out of the bag, she felt betrayed.

当他泄露消息时，她感到被背叛了。