"We don't often train to do it in an environment, what we call a dirty environment, where there is a radiological enemy here."

VOA: standard.2010.07.21

Often combining the results of several similar studies can produce conclusions that the individual studies don't support.

VOA: standard.2010.03.25

And they often don't have to till at all, which is better for the soil.

VOA: standard.2010.04.15

Often parents don't realize there's a problem because their child does not look fat.

VOA: standard.2010.03.09

But it is often fast-paced and complex,and some musicians admit they don't always succeed.

VOA: standard.2010.05.28