Or it could have been used to hold the shape of the shoe while it was not being worn.

VOA: special.2010.08.03

Pumps that were used to keep the mine dry have not been in operation since its closure.

VOA: special.2009.07.21

The researchers say the grass might have been used to keep the wearer's foot warm.

VOA: special.2010.08.03

Spices have long been used to keep food safe to eat.

VOA: special.2010.06.01

Orbiters,landers and rovers have all been used to explore Mars.

VOA: special.2010.07.28

Burns acknowledged to reporters here that measures have been included in the legislation to ensure that the development money is properly used "for the purposes intended."

VOA: standard.2009.10.16

And there are reports that the weapons used have been linked to another attack on a group of Muslim villagers at a tea shop last year.

VOA: standard.2009.08.31

Such events have been used by opposition supporters to protest against the government.

VOA: standard.2009.12.22

Navy spokesman Lieutenant Nathan Christiansen tells VOA that sailors and their families have been warned to be careful not to reveal any information that could be used against them.

VOA: standard.2010.01.07