Then he quivered all over and let out a long, slow hiss.

She hesitated a moment, then let her breath out in a long, slow hiss of understanding.

Blade's breath went out of him in a long, slow hiss.

Ruanek let his breath out in a slow hiss of frustration.

"Yes," the Resaurian said in a slow hiss, "a research facility."

The rough voice changed to a slow hiss.

Ben Holiday let his breath escape in a slow hiss of relief.

The slow hiss of the oil burners filled the air now and blanketed all other sound.

'Robert,' he said, eventually, in a slow hiss of hatred.

He took a deep breath, blowing it out in a slow hiss.