The idea behind Britain's health-care system is straightforward, says Michael Summers of the non-profit Patients Association that helps people understand the National Health Service.

VOA: standard.2009.09.24

Anybody have an idea? What's the one function of state? I'm the system, the rest are the surrounding. What's the one function of state that's constant when I'm doing all my chemical reactions to move my arms around?

态函数又是什么呢？,我是一个系统，其余的是周围的环境,那么当我在做所有的化学反应,去四处移动我的手臂的时候,什么量是常数？

麻省理工公开课 - 热力学与动力学课程节选

Marjane is an instinctive foe of the system, though her idea of rebellion is to listen to Iron Maiden in her bedroom, and a period spent as a student in Vienna ends in frustration and woe.

NEWYORKER: Persepolis

To go back to your first question, as we have talked about missile defense in the past, what we needed was a system that addressed the idea of multiple smaller missiles, the type of technology which you see tested most frequently, a system that is more able and more quickly deployable to address that.

WHITEHOUSE: Press Briefing

Lindsey, a former member of the Board of Governors of the Federal Reserve System, is open to the idea of free-market currencies, and there is a growing movement to incorporate gold into the global monetary system.

FORBES: The Limits Of Monetary Policy Call For Moral, Sound Money