名词
中文翻译：Unknown
同义词：
['preparatory', 'preliminary', 'preparatory flight']
例句：
-
1. The pilots must complete a pre-flight checklist before takeoff.
飞行员在起飞前必须完成一个检查清单。
-
2. The airline has announced that there will be a pre-flight briefing for all passengers.
航空公司宣布对所有乘客进行一次飞行前简报。
-
3. The aircraft was pre-flighted by the maintenance team before departure.
飞机在出发前由维护团队进行了检查。