| 释义 |
clearance
n
1 [C, U] (act of) clearing, removing or tidying sth 清理、 清除或整理某事物
`slum clearance, ie knocking down of slum houses 清拆贫民窟（拆除贫民窟的房屋）
[attrib 作定语]
a `clearance sale, ie one in which all unwanted stock in a shop is sold at reduced prices （商店）清货大贱卖.
2 [C] (in football, hockey, etc) act of kicking or striking the ball away from the goal （足球、 曲棍球等）将球踢出或击出球门区的动作
a fine clearance by the full-back 後卫将球一脚踢出球门区.
3 [C, U] space left clear when one object moves past or under another 净空, 余隙, 量（一物从另一物旁边或下面经过时, 两者间的空隙）
a clearance of only two feet, eg for a ship moving through a canal 仅两英尺的净空（如船通过运河时）
There is not much clearance for tall vehicles passing under this bridge. 高大车辆在这桥下通过时没有多大余隙.
4
(a) [C, U] (document giving) authorization or permission, eg for a ship or plane to leave a place or for goods to pass through customs(2) 许可（证）（如准予船只或飞机离开或货物通过海关的）
get clearance for take-off 得到起飞的许可.
(b) [U] official permission for sb to work with secret information, etc 正式批准某人参与机密工作等的许可
give sb security clearance 保安部门给予某人的机密工作许可.
5 [C, U] clearing of cheques at a clearing-house (clear3) （票据交换所内的）支票交换, 结算, 清算.
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