Selection sort too really reduces to a total number of comparisons because I'm again comparing the current smallest to the next thing I see, the next thing, so really a lot of these sorting algorithms boil down to comparisons and the numbers that you actually have to make.

选择排序也可归纳为总数的比较,因为要将当前最小者与下一个进行比较,接着再下一个，可见,很多排序算法都可归结为比较,以及需要比较的次数。

哈佛公开课 - 计算机科学课程节选

So, using the terminology of chemists, which is a good thing to do, because in this course we are all chemists, we want to make sure that we're not using just the physical description of the numbers, but that we can correlate it to 1 0 0 what we understand as orbitals, and instead of 1, 0, 0, 1s we call this the 1 s orbital.

我们最好学会，利用这些化学术语，因为我们这课,就是关于化学的，我们,不仅要知道，这些数字,的物理描述，还要能把它,和我们知道的轨道联系起来，我们叫它。

麻省理工公开课 - 化学原理课程节选