Deeper and deeper we sank, into the sulfuric-acid perpetual global clouds of Venus.

Muddy brown sunlight filtered through the perpetual clouds of dust.

The smoke of the fires mingled with the blown dust to form the perpetual cloud that hung over the township.

I think it was that perpetual low cloud, it seemed to creep right into the house, and then those terrible winds.

Usually the Mountains of the Moon were bidden in their own perpetual clouds.

He was stretched out along the grassy riverbank outside the inn, enjoying the fall's perpetual cloud of cool spray.

A perpetual cloud hangs in the air.

The perpetual clouds of Venus radiated dazzling light.

It also put a perpetual cloud around the planet that lowered the temperature and made life arduous.

The forts swarmed with men, and their various activities raised an almost perpetual cloud of dust.