The short-term and long-term tests each cost about $30, officials said.

For a better understanding of your year-round average radon level, take a long-term test.

Instead, the conflict has turned into long-term test of wills.

The following tables summarize the results of long-term tests reported by specialized media.

But the Taliban, he said, are digging in, making the war a long-term test of wills.

And he said the real problem is you can't really do long-term, double-blind tests on nutrition.

And they did a long-term test of how Skype worked.

That car had relatively few sample defects and proved reliable over a long-term test.

"It could be produced at the same time long-term tests" on biological activity were conducted, they said.

On the same motorway, a long-term test of a guided bus system is being held since 1980.