clearance

英 [ˈklɪərəns]

美 [ˈklɪrəns]

n.  清除; 排除; 清理; 净空; 间距; 间隙; (录用或准许接触机密等以前的)审查许可，审核批准

复数：clearances　

IELTSTEM4TEM8化学

Collins.1 / BNC.5606 / COCA.8962

牛津词典

noun

• 清除；排除；清理
  the removal of things that are not wanted
  1. forest clearances
     伐空的林地
  2. slum clearance (= the removal of houses that are in very bad condition in an area of a town)
     拆除贫民窟
  3. a clearance sale (= in a shop/store, when goods are sold cheaply to get rid of them quickly)
     清仓大甩卖
• 净空；间距；间隙
  the amount of space or distance that is needed between two objects so that they do not touch each other
  1. There is not much clearance for vehicles passing under this bridge.
     车辆在这座桥下通过时没有多少余隙。
  2. a clearance of one metre
     一米的间距
• （录用或准许接触机密等以前的）审查许可，审核批准
  official permission that is given to sb before they can work somewhere, have particular information, or do sth they want to do
  1. I'm waiting for clearance from headquarters.
     我在等待总部的录用审查许可。
  2. All employees at the submarine base require security clearance.
     所有潜水艇基地的雇员必须得到安全部门的审查许可方可录用。
• （人、交通工具出入空港或出入境的）许可，准许
  official permission for a person or vehicle to enter or leave an airport or a country
  1. The pilot was waiting for clearance for take-off.
     飞行员在等待起飞的许可。
• （支票的）兑现
  the process of a cheque being paid by a bank
• （足球及其他一些体育运动中的）解围
  a clearance in football ( soccer ) and some other sports is when a player kicks or hits the ball away from the goal of his or her own team

柯林斯词典

• N-VAR 清除;清理
  Clearanceis the removal of old buildings, trees, or other things that are not wanted from an area.
  1. ...a slum clearance operation in Nairobi...
     内罗毕拆除贫民窟的行动
  2. The UN pledged to help supervise the clearance of mines.
     联合国承诺协助监督扫雷工作。
  3. ...widespread clearance of jungle land.
     丛林地带的大面积砍伐
• N-VAR (官方的)批准，许可
  If you getclearance todo or have something, you get official approval or permission to do or have it.
  1. Thai Airways said the plane had been given clearance to land...
     泰国航空公司说，该飞机已经得到降落许可。
  2. He has a security clearance that allows him access to classified information.
     他持有安全许可，可以接触机密信息。
• N-VAR (路面、河面与上方桥梁之间的)净空，间隙，间距
  Theclearanceof a bridge is the distance between the lowest point of the bridge and the road or the water under the bridge.
  1. The lowest fixed bridge has 12.8m clearance.
     最低的固定桥下方通行高度为12.8米。

英英释义

noun

• permission to proceed
  1. the plane was given clearance to land
• the distance by which one thing clears another
• vertical space available to allow easy passage under something
  Synonym:headroomheadway

双语例句

• They have to wait for clearance from air traffic control.
  他们需要等空中交通管制人员的放行。
• Take critical site dimensions to ensure tolerances and clearance to other building site work.
  考虑关键现场尺寸，保证与其他现场工作建筑的裕度和净空。
• He has a security clearance that allows him access to classified information
  他获得了安全许可，可以接触机密信息。
• The clearance between the bridge and the top of the bus was only ten centimeters.
  桥与公共汽车顶之间的距离只有10公分。
• A program of slum clearance has been approved but God knows when it will come to pass.
  拆除旧房屋的计划得到了批准，但天晓得什么时候能实现。
• The effects of tip clearance on duct propeller's performance were investigated in six different tip clearances.
  选择六种不同的叶梢间隙研究叶梢间隙对导管桨性能的影响。
• China continues to promote domestic and international mine clearance efforts.
  中国继续推动国内和国际扫雷努力。
• The UN pledged to help supervise the clearance of mines.
  联合国承诺协助监督扫雷工作。
• You do have security clearance to be here?
  你有进入这里的安全许可对吧？
• A mechanical model of two-degree-of-freedom system with clearance was established, whose periodic motion and disturbed motion were studied.
  建立了一类两自由度含间隙系统的力学模型，并研究了该系统的周期运动及运动的受扰运动。