Vaccine court is a system where government attorneys defended a government program using government funded science, decided by government judges."

VOA: standard.2010.03.23

Simmons say Havana has long relied on short wave radio to send encoded messages using a system that converts letters into numbers.

VOA: standard.2009.06.06

Souem came here to plant in the dry season on her relative's plot,using water from the irrigation system.

VOA: standard.2010.06.02