Yet,every day,Americans depend on their transportation system to keep them, and the largest economy in the world, on the move.

VOA: special.2010.01.11

That is to say, it is not a system of signs understood as stable relationships between a concept world and a world of signifying.

也就是说，它不是一个符号系统，这个符号系统被理解为,概念世界和指示世界间的稳定的关系。

耶鲁公开课 - 文学理论导论课程节选

So we have system insulated from the outside world, and we have two bulbs.

我们有一个与环境隔绝的系统，和两个腔体。

麻省理工公开课 - 热力学与动力学课程节选

Android has leapfrogged Apple's iOS mobile operating system to become the most widely used smartphone operating system world-wide.

WSJ: Google Android Chief Andy Rubin Steps Aside

But at the same time, we must recognize that the world financial system is the circulatory system for the world economy.

FORBES: Teaching Business In A Time Of Crisis

On the 40th anniversary of the UNESCO Convention Concerning the Protection of the World Cultural and Natural Heritage, the 30th anniversary of the declaration of Old Havana and its fortress system as World Heritage Sites, and the 20th anniversary of the UNESCO Programme "Memory of the World", a press conference was held on Tuesday, November 30.

UNESCO: MEDIA SERVICES