I used an air drill to bore holes in the wall.

The workers used air drills to break through the concrete wall.

I bought some air cushions for the outdoor seating.

Air-cushion vehicles are used for transportation on water and land.

Air cushion vehicles are used for transportation on water and land.

The air strikes destroyed the enemy's military base.

She relies on her aid dog to help her with daily tasks.

The aid-major inspected the troops before the parade.

Many aid-majors are working in developing countries.

The air levels in the city have improved since the new regulations were implemented.