closed-door
UKˌkləʊzdˈdɔːUSˌkloʊzdˈdɔːr
Meaning
1adj.
关着门的；秘密的；不公开的
Usage
The committee held a closed-door meeting to discuss the sensitive issue.
委员会举行了一次闭门会议，讨论这个敏感问题。
The trial was conducted behind closed doors to protect the victims' privacy.
审判以不公开方式进行，以保护受害者隐私。
Journalists were barred from the closed-door session of the conference.
记者被禁止参加会议的闭门环节。
Etymology
closed-door 是一个现代英语复合形容词，由 "closed"（关闭的）和 "door"（门）直接组合而成，字面意为"门关着的"。这一形象表达最初描述物理状态，后隐喻扩展为"秘密的"或"不公开的"，强调与外界隔绝、缺乏透明度的特性，生动体现了从具体到抽象的语义演变。