The company also makes a version for one-time use.

VOA: special.2010.07.13

But improved farming methods later increased their yields and, at the same time, made better use of chemical nitrogen fertilizer.

VOA: special.2009.07.28

At the time, she was searching for a way to make a material strong enough to use on automobile tires.

VOA: special.2010.02.09

He died last year. By that time, hundreds of thousands of the filters were in use in developing countries.

VOA: special.2009.06.22

At the time, Montclin had been sorry his sister had no serious evidence to use against Cazeau.

VOA: special.2009.06.27

By that time, the use of the telegraph meant that newspapers could report on recent events.

VOA: special.2009.04.20

And after he died there were more questions this time about his use of painkillers.

VOA: special.2009.06.27

She says the common belief among doctors at the time was that they could use their patients in their research in exchange for free treatment.

VOA: special.2010.07.21

For the first time, scientists around the world had a limitless number of cells they could use to test the effects of diseases, medicines and chemicals.

VOA: special.2010.07.21

With a credit card, you are borrowing money every time you use it.

VOA: special.2009.05.21

It can be accomplished in part by direct recruiting by the Government itself, treating the task as we would treat the emergency of a war, but at the same time,through this employment, accomplishing greatly needed projects to stimulate and reorganize the use of our great natural resources.

VOA: special.2011.05.19

It is one the president takes seriously, and one the president is going to use his time to get right."

VOA: standard.2009.10.09

So,yes,there is a threat particularly of the use of radioactive material, although we have no specific evidence indicating any capability at this time."

VOA: standard.2009.05.01

Congress will take its annual long recess in August, and Democrats hope to use the time to build support for health-care reform around the country.

VOA: standard.2009.07.31