They said colonies halfway around the world would be costly to protect.

VOA: special.2010.07.22

And policies can be costly even when employers share the costs.

VOA: special.2009.07.25

But Mr.Kirshner saves that can be costly.

VOA: special.2011.05.13

Modern,manufactured dyes can be costly.

VOA: special.2010.08.02

He said the coalition effort to defeat the Taliban and al-Qaida in Afghanistan will be costly and require great commitment, but that it will succeed.

VOA: standard.2009.12.09

The researchers knew it would be easier and less costly to map a smaller frog with fewer chromosomal pairs.

VOA: special.2010.06.29

Others say the change will be too costly, requiring new textbooks and different kinds of training for teachers.

VOA: special.2010.03.25

But the changes that would be needed to carry astronauts are costly and untried.

VOA: special.2010.04.28

The study decided it would be less costly,overall, to build the canal in Nicaragua.

VOA: special.2010.08.12

Some studies suggest that punishment can be too costly to be useful.

VOA: special.2009.03.03

These solid fuels may be the least costly fuels available.

VOA: special.2010.02.01

Birthday parties can be low cost or very costly.

VOA: special.2009.09.11

These hotels can be very costly.

VOA: special.2009.08.19

American funerals can be quite costly.

VOA: special.2009.12.11

Republicans say it will be too costly for businesses.

VOA: standard.2009.05.30