The amount of work you've put in to get here depends on the path. It's not a function of state.

这些量就能,决定系统的状态了。

麻省理工公开课 - 热力学与动力学课程节选

And tomorrow it's recitation, we'll spend quite a bit of time on shortest path problems.

也就是说我们会在最短路径问题上,花上很多时间。

麻省理工公开课 - 计算机科学及编程导论课程节选