No sound but the murmur of the river reached them through the heavy air.

Thus, a heavy air of threat hung over this meeting.

There was a heavy air of urgency about the operation.

The silence, through the heavy air, took on a booming quality.

The wide wings seemed to beat at the heavy air.

The windows were up, but the heavy air was not moving.

She drew in a deep breath of the hot, heavy air.

Dawn in Chicago, heavy air and the gray sky low.

Instead, he closed his eyes and breathed the heavy air.

The heavy air seemed to load those up with despair.