So, over the last few lectures we've worked and struggled so formulate the second and third laws of thermodynamics in addition to the first.

在前几次课中,我们通过努力明确的,给出了热力学,第一，第二和第三定律。

麻省理工公开课 - 热力学与动力学课程节选

So what we're going to do is consider the first and second laws.

我们需要考虑的是,热力学第一和第二定律。

麻省理工公开课 - 热力学与动力学课程节选