And so the program may do different things on different runs. We'll see a lot of that, because it's used a lot in modern computing.

因此程序会对不同的输入做不同的操作,我们会看到很多这样的情况，因为它在现代计算中被广泛应用。

麻省理工公开课 - 计算机科学及编程导论课程节选

Because it was really the communal aspect of what happens when you're out in the outdoors.

因为在户外活动的种种状况中,我们的确可以看到集体性。

普林斯顿公开课 - 人性课程节选

This is why people right tables and tables of H delta H's. Why you have delta H's from all these reactions, because this is basically the heat and the heat is something we can measure, we can control. We can figure out how much heat is going in and out of something.

这就是为什么人们一再提出ΔH的原因,为什么在所有的反应中你都能看到Δ,因为它就是热量，而且热量,是一种我们可以测量并且控制的东西，我们可以测量出有多少热量,从一些东西里面放出或被吸收。

麻省理工公开课 - 热力学与动力学课程节选