refueling aircraft

例句：

1. 1. The pilots carefully checked the fuel levels of their aircraft before taking off.
   飞行员在起飞前仔细检查了他们的飞机的燃油水平。
2. 2. The military plane was refueling in the hangar when it suddenly caught fire.
   那架军用飞机在机库中加油时突然起火了。
3. 3. The flight crew had to make an emergency landing after their aircraft ran out of fuel.
   飞行机组人员在他们的飞机燃料耗尽后不得不紧急降落。