Gil was a hurricane for only about 30 hours, and it began to encounter dry air.

His knuckles scraped against the rock, but the rest of his body encountered only air.

As it encounters more and more air, so its descent will accelerate.

The blade encountered only empty air, even when he reached into a level dangerous to his body.

It moved to the northeast and encountered cold air from the north.

His hand encountered thin air far past the place where the door-even if invisible-should have been.

You stated that the spacecraft's descent will accelerate as it encounters more air while entering the atmosphere.

It encountered air instead as the man deftly spun around and moved aside.

Olive reached around to open the nearest cabinet, where she kept the spare rolls, but her flailing hand encountered only air.

He stepped quickly forward, held out his hand to close the deal, and encountered only air.