n.  许可，批准

n.  清除，清理

n.  间距，间隙

• the clearance of minefields  雷区的扫雷工作

• slum clearance  拆除贫民窟

• a clearance sale  清仓大甩卖

• She’ll race if she gets medical clearance from her doctor. 如果取得了医生的许可，她就会参加比赛。

• The pilot requested clearance for an emergency landing. 驾驶员请求准许紧急降落。

• There was less than a foot’s clearance between the ship’s sides and the wharf. 船舷和码头之间有不到一英尺的间隙。

BrE /əˌbriːviˈeɪʃn/   

NAmE /əˌbriːviˈeɪʃn/