They held hands as they drank the hot coffee.

VOA: special.2010.01.09

I am the system. I could be a system It could be a hot coffee in a thermos.

我就是系统，我可以是个系统,它可以是热水瓶里的热咖啡。

麻省理工公开课 - 热力学与动力学课程节选

The thermos, with the lid on top, It's not a open system your coffee is going to stay warm or hot in the thermos.

顶部盖了盖子的热水瓶，不是开系,你希望你的咖啡在热水瓶里面保持温暖,或滚烫。

麻省理工公开课 - 热力学与动力学课程节选

"I brought you some hot coffee."

VOA: special.2010.01.09