灰尘通过空气传播，可能会引发过敏。

Dust can become ___airborne and may trigger allergies.

空降部队在夜间被投送到敌后执行任务。

The ___airborne troops were dropped behind enemy lines for a night mission.

飞机刚起飞，乘务员就开始了饮料服务。

The flight attendants started serving drinks as soon as the plane was ___airborne.