The Professor crawled back to the edge of the crater and peered down, his fear dispersing rapidly.

The crowd was dispersing rapidly now, everyone fleeing for their lives.

Today's demonstration was much more concentrated, with the crowds dispersing rapidly in the cold after the end of speeches.

It disperses rapidly in open air where levels are low.

The crowd dispersed rapidly after that, and in forty minutes the two boys were left alone on the small hill they had chosen.

Radioactive iodine can disperse rapidly in air and water, under the right conditions.

The crowd rapidly dispersed leaving only the captain, the lieutenants and the first sergeant.

Here, by the river, the day's heat rapidly dispersed after sunset.

After retreat the men dispersed rapidly and supply officers kept short hours.

These clusters will rapidly disperse within a few million years.