[uncountable, countable]official permission that is given to somebody before they can work somewhere, have particular information, or do something they want to do（录用或准许接触机密以前的）审查许可，审核批准
I'm waiting for clearance from headquarters.我在等待总部的录用审查许可。🔊🔊
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。🔊🔊
Extra Examples
Formal clearance by the Cabinet has not been given.内阁尚未正式批准。
It is safest to seek advance clearance from the tax office.安全起见还是事先去税务局申请许可。
She had to be vetted for security clearance before she was appointed.在任命她之前，必须对她进行安全检查。
Allow a minimum of six weeks to obtain the necessary clearances.至少留出六周时间以取得必要的审查许可。
You'll need to get security clearance for this job.做这项工作需要先通过忠诚审查。
[uncountable, countable]the process of a payment into a bank account being confirmed by the bank, so the money is available for you to use（付款的）到账
Clearance will take seven days.清关将需要7天。
[countable]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（足球及其他一些体育运动中的）解围Topics Sports: ball and racket sportsc2