Clearance
01
the amount of space or distance separating two objects
例子
The plane 's wing had minimal clearance from the hangar wall.
There 's just enough clearance for the drawer to open fully.
02
许可
official permission to proceed or to happen
例子
The pilot received clearance from air traffic control to take off.
飞行员从空中交通管制处获得了起飞的许可。
Employees need security clearance to access classified information.
员工需要安全许可才能访问机密信息。
03
the vertical distance available beneath an object for passage
例子
The bridge has a clearance of 4.5 meters.
Trucks exceeding the height clearance will be rerouted.
04
the act of clearing away obstacles or unwanted materials to make an area open or usable
例子
The team began land clearance for the new construction site.
Debris clearance took several days after the storm.
05
解围, 清除
a defensive play that drives the ball away from the goal area
例子
The defender made a crucial clearance to relieve pressure on the defense.
后卫做出了关键的解围，以减轻防守压力。
His clearance reached the halfway line, allowing the team to regroup.
他的解围球到了中线，让球队得以重新组织。
