So coffee and the milk and whatever you like in your coffee would be the system.

么咖啡，牛奶以及任何你能想到的,在你的咖啡里的东西就是一个系统。

麻省理工公开课 - 热力学与动力学课程节选

So when you go, for example, in your neighborhood, if there's one coffee shop and you like their coffee,

所以，举个例子来说，如果你住的小区有个咖啡店，而你又喜欢喝咖啡的话，你可以去，

在英语系国家 - SpeakingMax英语口语达人

You're going to have to know when you describe the system, if your system is homogeneous, like your coffee with milk in it, or heterogeneous like water with an ice cube in it So heterogeneous means that you've got different phases in your system.

你要知道,当你描述一个系统时，你的系统是均匀的呢，像掺了牛奶的咖啡，那样还是非均匀的，像放了冰块的水,非均匀系统就是说,在你的系统中有不同的相存在。

麻省理工公开课 - 热力学与动力学课程节选