tight-lipped

The manager stayed tight-lipped about the upcoming changes.

经理对即将到来的变化守口如瓶。

用法提示：tight-lipped 作表语形容词，表示“守口如瓶的”，后接 about 引出不愿透露的内容。

She was tight-lipped when reporters asked about her private life.

记者问及她的私生活时，她闭口不谈。

用法提示：tight-lipped 作主语补足语，说明她不愿开口说话。

He remained tight-lipped throughout the meeting, saying nothing about the plan.

整个会议期间他一直紧闭双唇，对计划只字不提。

用法提示：tight-lipped 作系动词 remained 的表语，形容沉默不语的状态。