This week,we tell about the biggest system of freshwater lakes in the world, the Great Lakes between the United States and Canada.

VOA: special.2009.11.11

But if the system is in equilibrium, none of those states has lower enthalpy.

但是如果系统处于平衡态，所有其他的态都不可能具有更低的自由焓。

麻省理工公开课 - 热力学与动力学课程节选

But Hobbes lived at a time when the modern system of European states even as we understand them today, was just beginning to emerge.

霍布斯生活在一个时代,这个时代中，现代欧洲国家,就像我们今天理解的这样，已经快要出现了。

耶鲁公开课 - 政治哲学导论课程节选

One year ago, the United States financial system was in danger of collapse.

VOA: special.2009.09.18

So the point is, once you're at equilibrium none of the other states they're accessible, the system could rearrange itself to form them, but there is no accessible state that has higher entropy than the equilibrium state.

所以要点在于，如果你处于平衡态,其他所有的态都无法达到，我们可以重组体统来形成这些态，但没有一个可以达到的态,有比平衡态大的熵。

麻省理工公开课 - 热力学与动力学课程节选

civilian legal system. "Under domestic criminal law, the moment the person is in the hands of the United States government, they are entitled to be told they have a right to a lawyer and can remain silent,"

VOA: standard.2009.11.25

To put it mildly, the group of friends I've had over the years and ran around together with, it was originally seven of us and the healthcare system in the United States has killed us all but two,".

VOA: standard.2009.06.13