This makes it very hard to move air in and out of the lungs.

They have a hard time moving enough air across their little drives to keep them cool.

It was the ordinary summer sound of moving air that no one pays attention to.

But he could not feel a breath of moving air upon his face.

Then the ship moved clear - out into the night air of the bay.

Some aircraft keep in the sky by moving air over their wings.

To move air, either a positive pressure or a vacuum must be created.

I felt the tug of moving air when they whipped the door away from me.

The old blowers could move air in only one direction.

We use it to move not only air, but also water.