A comet is a huge ball of frozen gas and dust that often releases a long trail of material as it nears the sun.

VOA: special.2009.09.30

Mister Chavez often went for long periods without food to protest the conditions under which the farm workers were forced to do their jobs.

VOA: special.2009.09.06

Often the mother had to be treated in a hospital for long periods of time.

VOA: special.2009.12.06

Often,they sang about the long ride to the cattle markets where the cows were sold for beef, as in this song called, "Git Along Little Dogie."

VOA: special.2010.03.25

Researchers studying the effects of long-term spaceflight often examine the hipbone or backbone.

VOA: special.2009.03.10

The long-eared animals are often gray with white noses, jaws and undersides.

VOA: special.2010.02.16

She often did things long before they became accepted in society.

VOA: special.2009.05.10

Speaking to a packed chamber at Stormont, the Northern Ireland Assembly, Hillary Clinton praised lawmakers for progress made in a long and often arduous peace process.

VOA: standard.2009.10.12

For many in Asia gold has long held not something like gambling - a special place as an investment, often as jewelry - glittering gold chains, bangles,and bracelets.

VOA: standard.2010.07.21