The park system includes more than three-hundred-seventy protected areas.

VOA: special.2010.01.04

Well, it would follow then from one, two, and three that we are not a purely physical system.

那么,综合一二三我们得到,我们不仅仅是纯粹的物理系统

耶鲁公开课 - 死亡课程节选

The respiratory system, for example, the renal system, the digestive system, these are examples - three examples of organ systems that contact the external environment.

例如,呼吸系统,泌尿系统,消化系统,这些系统,这三个系统,与外环境相联系

耶鲁公开课 - 生物医学工程探索课程节选

The American system has three kinds of juries.

VOA: special.2009.08.31

"We will use the tremendous capabilities of this ion propulsion system to climb out of orbit around Vesta, travel for almost another three years through the asteroid belt to dwarf planet Ceres and then go into orbit around Ceres and undertake the same kind of measurements there that we'll be doing at Vesta.

VOA: special.2011.07.27

The adaptation of Charles Dickens' Little Dorrit, a co-production of the BBC and U.S.Public Broadcasting System, won three awards.

VOA: standard.2009.09.21

that 'we tried initially, during the first three years of Gorbachev's tenure, to improve the system accelerate it but keep it intact.

VOA: standard.2009.11.03

The system effectively controlled participants' blood sugar for 27 hours, during which time they ate three high-carbohydrate meals and slept through the night at a hospital.

VOA: standard.2010.04.15