But she says the research does show the need to study whether or not there are long-lasting effects of repeated exposure over several years.

VOA: special.2011.03.02

This wall may work as well and last as long but it is not as pleasing to look at as the one built by hand.

VOA: special.2009.06.01

Fabricio Cimino wrote: Not long ago I wanted to watch TV, but it wouldn't turn on, so I did everything I could to start it.

VOA: special.2010.09.09

Her marriage did not last long. But she had two children, Gail and Edwin.

VOA: special.2010.05.23

But it did not take long for the health care meeting to become heated.

VOA: special.2010.02.27

But thoughtful people did not believe that peace would last long.

VOA: special.2009.04.16

But she could not hide her career for very long.

VOA: special.2009.10.04

But he did not think the war would last long.

VOA: special.2009.02.26

But this record will probably not last for long.

VOA: special.2010.03.31

But the Indians' victory did not last long.

VOA: special.2010.04.08

But he said Israel would not agree in advance to Syria's long-time demand to withdraw from the strategic Golan Heights.

VOA: standard.2009.04.26

But he says in the long-run the solution to piracy will not be found at sea,but on land.

VOA: standard.2009.10.30

Britain has a long history of deep involvement in not only Iran, but across the Middle East during the past 200 years.

VOA: standard.2009.07.02

Speaking with President Karzai at a news conference, Secretary Gates indicated he was not surprised by that statement, but hopes it will not take that long.

VOA: standard.2009.12.09