clearance
🇬🇧/ˈklɪərəns/ 🇺🇸/ˈklɪrəns/Clearance is the removal of old buildings, trees, or other things that are not wanted from an area. 拆除; 清除
noun [具体名词] 审核批准；（飞机起降的）许可，准许；间距，间隙；清理，清除；（足球等中使对方不能破门的）解围；（银行支票的）结算，兑现
The U.N. pledged to help supervise the clearance of mines. 联合国承诺帮助监督扫雷工作。
noun [专属名词] 官方许可
Thai Airways said the plane had been given clearance to land. 泰国航空公司说该飞机已经被授予了着陆的官方许可。
