好词典
closed
UK /kləʊzd/US /kloʊzd/
词源
源自中古英语 clos，源自古法语 clos（关闭的），最终源自拉丁语 clausus（关闭的），是动词 claudere（关闭）的过去分词形式。
adjective
❶ 指某物处于关闭状态，不对外开放或使用，如商店关门、道路封闭等。
“The shop is closed on Sundays.”
（这家商店周日不营业。）
“The road was closed due to construction.”
（这条路因施工被封闭了。）
❶ 形容人或群体不愿接受新想法或外界影响，思想保守封闭。
“He has a very closed mind about modern art.”
（他对现代艺术持非常封闭的态度。）
“The community was closed to outsiders.”
（这个社区对外来者很排斥。）
同义词:shut, sealed, locked, inaccessible, unreceptive
verb
❶ close的过去式和过去分词形式，表示关闭的动作已完成。
“She closed the window before going to bed.”
（她睡前关上了窗户。）
“The deal was closed after weeks of negotiation.”
（经过数周谈判后交易达成了。）
同义词:shut, fastened, secured, concluded, ended
常见短语
behind closed doors — 指在私下或非公开场合进行的事情，不为外界所知。
“The decision was made behind closed doors.”
（这个决定是私下做出的。）
closed book — 形容完全不了解或无法理解的事物，像一本合上的书。
“Advanced physics is a closed book to me.”
（高等物理对我来说如同天书。）