Together, we have taken steps to stimulate growth, restore the flow of credit,open markets, and dramatically reform our financial regulatory system to prevent such crises from occurring again - steps that will lead to job creation at home,".

VOA: standard.2009.04.11

An open system, as the name describes, allows mass and energy to freely flow through the boundary.

开系，顾名思义，允许质量和能量自由地,流过它的边界。

麻省理工公开课 - 热力学与动力学课程节选

system is the opposite of the open system, no mass and no energy can flow through the boundary.

孤立系与开系正相反，没有质量或能量,能流过它的边界。

麻省理工公开课 - 热力学与动力学课程节选