closed

/klәuzd/

柯林斯星级

牛津核心词汇

BNC频率: 3490

现代语料频率: 3680

中文翻译

a. 关闭的, 限于少数人的

[计] 关闭指令

英文解释

a. not open or affording passage or access

a. (set theory) of an interval that contains both its endpoints

a. used especially of mouth or eyes

s. requiring union membership

词态变化

原型:close

变形:pd

过去分词:closed

过去式:closed

常见例句

v take away to an undisclosed location against their will and usually in order to extract a ransom v pull away from the body

An apparatus consisting chiefly of a closed vessel (as a globe or cylinder) with one or more projecting bent tubes, through which steam is made to pass from the vessel, causing it to revolve.

A kind of pump for exhausting air from a vessel or closed space

also, a pump to condense air or force it into a closed space. A pump used to exhaust from a condenser the condensed steam, the water used for condensing, and any commingled air.

It is closed above and open below, and has its open end plunged into water.