clearance
/ˈklɪr.əns/
名词
（货物的）清仓减价，清仓甩卖
We bought our new carpet at a clearance sale.
我们的新地毯是在清仓大减价的时候买的。
间距；间隙；净空
It was difficult getting the piano through the doorway because we only had a clearance of a few centimetres.
把钢琴搬过这道门很难，因为只有几厘米的余地。
批准，许可，准许
The plane will be taking off as soon as it gets clearance.
飞机一得到许可就会起飞。