我们第二天继续向内陆行进。

We travelled further inland the next day.

《牛津词典》

我们第二天很早就到达了。

We arrived early the next day.

《牛津词典》

这是我们第二节英语课。

It's our second English class.

youdao

And we combine this with first law, which for the case of pressure volume changes we write as this.

结合第一和第二定律,对于压强体积功我们可以这样写。

麻省理工公开课 - 热力学与动力学课程节选

So, for example, in the second case, we say that we see 12 06 in terms of the kinetic energy.

比如，在第二种情况下，我们观测到，1206大小的动能。

麻省理工公开课 - 化学原理课程节选

Second thing we want to talk about very briefly as we go along is the semantics of the language.

我们要说的第二点,是语言的语义。

麻省理工公开课 - 计算机科学及编程导论课程节选