behind closed doors

含义

in private, where the public cannot see or hear

私下里，不让外界看到或听到.

例句

1. 1The two companies discussed the deal behind closed doors, away from reporters.
2. 2What happens behind closed doors in a marriage is often very different from what friends see.
3. 3The committee made its decision behind closed doors, so nobody knows who voted for what.
4. 4The players were furious that their contracts were negotiated behind closed doors.
5. 5Was the meeting open to parents, or did the governors talk behind closed doors?

语法

短语固定：doors 保持复数，不用冠词。通常跟在 meet、discuss 或 happen 等动词之后。