The truck is air-braked.

I air mailed the package yesterday.

I am air mailing the package to my friend.

She air mails the package to her friend.

I sent the documents via air mails.

I need a change of air, I've been stuck in the city for too long.

The air-smoothed car glided effortlessly down the highway.

The soldiers used the air commode during their mission.

The air reservoir is used to store compressed air.

The air reservoirs in the car help maintain consistent air pressure.