For example, celiac disease is difficult to identify because the signs of the disease are so common.

VOA: special.2009.04.14

The discovery is exciting because it suggests that the building blocks of life may be more common in the universe than scientists had thought.

VOA: special.2009.09.30

For example,celiac disease is difficult to identify because the signs of the disease are so common.

VOA: special.2010.06.15

"We're at a point in time when we think we have a real opportunity because with the signing of this joint declaration, the parties are coming together and saying that we share a common commitment to address the situation and to offer children better hope for the future through education."

VOA: special.2010.10.26

So now there is a problem of credibility of what the government is going to do, and of course the situation is different to situations in other periods because now there is a common currency."

VOA: standard.2010.06.24