The military has implemented strict air defense measures to protect the country from potential threats.

The air defence system detected and intercepted the incoming missile.

I need to buy a new air freshener for my room.

He enjoys shooting targets with his air gun.

I used an air hammer to break up the concrete.

The room was stuffy, so I opened the air hole to let in some fresh air.

I sent an air letter to my friend who lives overseas.

I used the air map to navigate through the mountains.

An air mass is a large body of air with uniform temperature and humidity.

I slept on an air mattress last night.