clearance

clearance
noun
[mass noun]

the action or process of removing or getting rid of something or of something's dispersing
清除
cleaning of the machine should include clearance of blockages.
机器清洁应包括阻塞物的清除。
there will be sunny intervals after clearance of any early mist.
早前的薄雾散后，会时不时出太阳。
■[often with adj. or noun modifier]the removal of buildings, people, or trees from land so as to free it for alternative uses
拆迁，清空
slum clearance accelerated during the 1960s.
20世纪60年代贫民窟拆迁加速。
[count noun]forest clearances.
清林。
■(亦作 house clearance)the removal of contents from a house
（房屋的）清空
the sheriff's officers supervised the house clearance.
司法官员们监督房子的清空。
[count noun]antiques wanted and clearances undertaken.
古董须保留，房屋须清空。
■the discharge of a debt
（债务的）偿清
■[count noun](in soccer and other games) a kick or hit that sends the ball out of a defensive zone
（英式足球等比赛）解围球
■[count noun](Snooker)the potting of all the balls remaining on the table in a single break
(斯诺克)一杆清盘，一杆全中
official authorization for something to proceed or take place
许可（证），批准
there was a delay in obtaining diplomatic clearance to overfly Israel.
在取得飞越以色列上空的外交许可中受到耽搁。
■(亦作 security clearance)official permission for someone to have access to classified information
接触机密的官方许可
these people don't have clearance.
这些人没有接触机密的官方许可。
■permission for an aircraft to take off or land at an airport
（飞机的）起飞（或降落）许可
he took off without air traffic clearance.
他未取得空中交通许可就起飞了。
■(亦作 customs clearance)the clearing of a person or ship by customs
（人、船只的）结关
■[count noun]a certificate showing that such clearance has been granted
出（或入）港证
■the process of clearing cheques through a clearing house
（支票的）兑现
clear space allowed for a thing to move past or under another
移动空间
always give cyclists plenty of clearance.
勿忘常给骑自行车者留出足够的移动空间。

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