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

If there's no heat flow between the b and c, then I can say all right, a and c were the same temperature.

如果在与之间没有热量流动，那么我就可以说，好吧与处于相同的温度。

麻省理工公开课 - 热力学与动力学课程节选

What happens then in--that's in 1925, so there's no cash flow at all.

之后1925年会发生什么呢,没有任何现金流

耶鲁公开课 - 金融市场课程节选

Let's say there's no heat flow.

让我们假设没有热量流动。

麻省理工公开课 - 热力学与动力学课程节选