Researchers at the University of Toronto in Canada are studying a mobile phone system that may help people with diabetes control their blood pressure.

VOA: special.2010.12.06

So, the system that gets designed in order to implement the cruise control

而那个为了实现恒速控制的系统，

在学校的经验 - SpeakingMax英语口语达人

And his quality control system at Motown was like a similar system in car factories.

VOA: special.2009.05.11

Raduege says one of his biggest concerns in Houston is the computer-run electronic control system that is vital to energy sector operations the country depends on.

VOA: standard.2009.08.11

Republicans stood united in opposition to the legislation, claiming it would increase the national debt, and put the government in firm control of the health care system.

VOA: standard.2010.03.22