not open 关闭的,闭合的 rooms with closed doors lined the hallway. 沿着走廊是几间关着房门的房间。 he sat with his eyes closed. 他闭目坐着。 ■(of a business) having ceased trading, especially for a short period (商家)(尤指短时间)歇业的 he put the ‘Closed’ sign up on the door. 他把标着“停止营业”字样的牌子挂在门上。 ■(of a society or system) not communicating with or influenced by others (社会,体制)对外封闭的,闭关自守的 ■limited to certain people; not open or available to all 限于某些人的;不是对所有人都开放的,并非人人可得的 the UN Security Council met in closed session. 联合国安全理事会召开内部会议。 ■unwilling to accept new ideas 保守的,守旧的 you're facing the situation with a closed mind. 你在以保守态度面对形势。 ■(Mathematics)(of a set) having the property that the result of a specified operation on any element of the set is itself a member of the set (数)(集合)封闭的 ■(Mathematics)(of a set) containing all its limit points (数)(集合)包含所有极限值的 ■(Geometry)(of a curve or figure) formed from a single unbroken line (几何)(曲线,图形)闭合的
常用词组 behind closed doors
taking place secretly or without public knowledge 秘密地;暗中地
closed book
a subject or person about which one knows nothing 完全理解不了的科目;完全理解不了的人 accounting has always been a closed book to me. 会计学对我来说一直是一门完全理解不了的科目。