They're both expansions. They'll both have net work done on the surroundings, but not the same amount, right.

是不同的，他们都是膨胀,都对外做功，但数量不同，对吧？

麻省理工公开课 - 热力学与动力学课程节选

This is providing work that's being used in here, but if you take the whole outside of the surroundings and this whole thing is the system, no net work, these things cancel each other, and yet heat's going up.

如果把外面的全部当成环境，把这里的全部当成系统,那么就没有净的功，它们相互抵消了，热量向上传输，会发生什么？

麻省理工公开课 - 热力学与动力学课程节选