These two clouds of gas contain no elements heavier than hydrogen and deuterium.

Another system tries to use light to detect aerosol clouds from miles away, but it cannot tell whether the clouds contain pathogens.

These clouds also contain lights, loudspeakers, and ventilation.

In the third type, the cloud contains categories, with size indicating number of subcategories.

The resulting cloud contains the words which are often used in conjunction with the search word.

The cloud also contained electrons, however, which were less energetic but capable of discharging the ship's positive electrical field.

Don't you know each cloud contains Pennies from heaven?

Such a cloud contains tiny droplets of water and sometimes slightly larger ones, called drizzle.

When at last the drawer was still, he said, "A single cloud floating in midday sky contain no duck sauce."

Scientists said the wispy clouds contained icy water particles and had a blue tint.