记忆方法
将“clearance”分解为“clear”（清晰的）和“ance”（表示行为或状态）。想象一个区域或物品被彻底清理到非常清晰的状态，这样的场景可以帮助你记忆这个单词的意思，即“清除”、“清理”或“许可”。
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中文词源
clearance 许可，兑现
来自clear,清楚的，解决了的。
英语词源
- clearance (n.)
- 1560s, "action of clearing," from clear (v.) + -ance. Meaning "a clear space" is from 1788. Meaning "approval, permission" (especially to land or take off an aircraft) is from 1944, American English; national security sense recorded from 1948. Clearance sale attested by 1843.
权威例句
- 1. The UN pledged to help supervise the clearance of mines.
- 联合国承诺协助监督扫雷工作。
- 2. 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。
- 3. 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。
- 4. 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。
- 5. The lowest fixed bridge has 12.8m clearance.
- 最低的固定桥下方通行高度为12.8米。