Her legs weren't quite steady when she snapped down a towel.
Then his hand snapped down flat on the book and closed.
Dark silence snapped down again but we barely had time to move before the faces were back.
His head snapped down and the floor came up at him.
The men snapped down their helmets in protection against that.
His cup clattered as he snapped it down on the table.
But as I reach for the door, the locks snap down.
The belt snapped down again, this time over her back.
When Levy saw the ball miss, his head snapped down.
Instead the button, upon pressure, snapped down level with the surface of the machine, did not rise again.