词典释义：
the action or process of removing or getting rid of something or of something's dispersing
清除
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cleaning of the machine should include clearance of blockages 清洁机器应包括阻塞物的清除
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there will be sunny intervals after clearance of any early mist .早晨的薄雾散后，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
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slum clearance accelerated during the 1960s 20世纪６０年代贫民窟拆迁加速了
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[count noun]
forest clearances .清林。
(亦作
（房屋的）清空
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the sheriff's officers supervised the house clearance 司法官员们监督房子的清空
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[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]
【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
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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
接触机密的官方许可
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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
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he took off without air traffic clearance .他未取得空中交通许可就起飞了。
(亦 作
（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
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always give cyclists plenty of clearance .勿忘常给骑自行车者留出足够的移动空间。
