So instead Emerson looked out through the window, watching distant banks of dense clouds roll ominously closer from the west.

The bank was rolling by quickly, and Dumphee realized that the current was pushing them along.

The five banks of near-imperceptible fog rolled across the road toward the diner.

Behind them a bank of reel-to-reel tape machines silently turned and rolled.

A bank of smoke, thick and vile smelling, rolled across the stream.

The breeze had freshened and the bank of smoke was rolling back fast.

Pumped from the ceiling, a bank of artificial fog rolled onto the runway.

The bank of mist settled slowly toward the ground and rolled in his direction.

The great banks of white fog were rolling away down the river before the light wind and the brilliant sun.

A heavy bank of clouds rolled across the darkening sky, and shadows lengthened quickly into night.