Scientists measured the air levels across the valley to assess pollution.

He used an air level to make sure the shelf was perfectly horizontal.

The construction workers loaded the truck with several air drills before heading to the remote site.

During the conflict, the residents braced for the air strikes that shattered the silence each night.

When a high-energy cosmic ray strikes the upper atmosphere, it generates an air shower that can be detected by ground-based instruments.

She took the air scooter out for a test flight above the lake at dawn.

The city tested air scooters during the weekend festival to demonstrate new personal transportation options.

She arranged the air plants on pieces of driftwood to create a living centerpiece on the table.

We enjoyed a picnic in the open air yesterday.

I always wear an air jacket when snorkeling to stay safe in case a strong current pulls me away.