They used a system of measurement called the Body Mass Index to define words like obese and overweight.

VOA: special.2009.07.21

Google has invested in a new company that wants to put up a system of satellites over Africa.

VOA: special.2009.02.16

A system of waterways designed after the Italian city of Venice has been built there.

VOA: special.2010.01.03

So they built a system of canals to bring water down from the mountains.

VOA: special.2009.06.04

He wanted to build a system of trade that connected people throughout the country.

VOA: special.2010.01.11

"We are running a system of separation of powers.

VOA: standard.2009.12.28

"We are working to establish a network and a system of protection of children and also to try to report cases of abuse and exploitation and try to save these children, put them in transit centers, try to recontact the family, and put them back with the family or with the extend family when the parents are not there or are not suitable to take care of the children,".

VOA: standard.2009.04.24

Workers built a huge system of waterways and pumping stations to control the overflow of Lake Okeechobee, north of the Everglades.

VOA: special.2009.06.30

Mars Day at the Smithsonian Air and Space Museum in Washington is a celebration of our solar system's most famous planet.

VOA: special.2010.07.28

He says a new system is needed to meet the speed and complexity of a twenty-first century global economy.

VOA: special.2009.06.19

The current economic downturn grew out of a culture of irresponsible lending and borrowing and "a failure of the entire system,"

VOA: special.2009.06.19

But with threats, a language barrier and fear of the legal system, victims are often unwilling or unable to seek help.

VOA: special.2010.06.14

Microfinance provides poor people with a way to build savings and work toward becoming part of a country's official financial system.

VOA: special.2010.06.16

A major reform of the American system of health care and insurance has moved farther in Congress than ever before.

VOA: special.2009.11.13