He rolled over, breathless, fighting to force air back into his lungs.

It is used to force air into an internal combustion engine.

I forced more air into it, to be heard by everyone.

He found it hard to breathe, and had to force air into his chest.

Consider a fan forcing air upward over a cold plate.

I forced it inside him the way you force air into the dying.

I doubled over, remembering to force air from my lungs.

He took another deep breath, trying to force air into his chest.

But he could barely force air into his lungs.

Suddenly, I couldn't force enough air into my lungs.