1、A series of closed-door meetings.
一系列秘密會議

2、The UN Security Council is due to hold closed-door consultations on Syria in New York shortly.
不久之后，聯(lián)合國安理會將在紐約召開閉門會議，商討敘利亞問題。

3、A series of closed-door meetings
一系列秘密會議

4、They held a closed-door meeting
他們舉行了一次秘密會議。

closed-door翻譯