How does a private pilot get access to the airways?私人飞行员如何获得航空路线的使用权？

Dislodged false teeth can block the airway.松脱的假牙可能会堵住气道。

As germs penetrate the airways, the throat often turns inflamed.细菌侵入呼吸道时, 咽部常会发炎。