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 清拆貧民窟(拆除貧民窟的房屋)
[attrib 作定語]
a `clearance sale, ie one in which all unwanted stock in a shop is sold at reduced prices (商店)清貨大賤賣.
2 [C] (in football, hockey, etc) act of kicking or striking the ball away from the goal (足球、 曲棍球等)將球踢出或擊出球門區的動作
a fine clearance by the full-back 後衛將球一腳踢出球門區.
3 [C, U] space left clear when one object moves past or under another 凈空, 余隙, 量(一物從另一物旁邊或下面經過時, 兩者間的空隙)
a clearance of only two feet, eg for a ship moving through a canal 僅兩英尺的凈空(如船通過運河時)
There is not much clearance for tall vehicles passing under this bridge. 高大車輛在這橋下通過時沒有多大余隙.
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) 許可(證)(如準予船只或飛機離開或貨物通過海關的)
get clearance for take-off 得到起飛的許可.
(b) [U] official permission for sb to work with secret information, etc 正式批準某人參與機密工作等的許可
give sb security clearance 保安部門給予某人的機密工作許可.
5 [C, U] clearing of cheques at a clearing-house (clear3) (票據交換所內的)支票交換, 結算, 清算.