Now, suppose in fact these weren't x and y glued together, these were radius and angle glued together.

我实际也说过了,我在这里操作的是，和这两个点。

麻省理工公开课 - 计算机科学及编程导论课程节选

OK, now that I've got points, I might want to do something with points.

好，我现在得到了一些点，我可能想对这些点做一些操作。

麻省理工公开课 - 计算机科学及编程导论课程节选

I could do the same thing, I could build polar point.

很多笛卡尔点，我可以做一些同样的操作。

麻省理工公开课 - 计算机科学及编程导论课程节选

So this first little piece of code right here says, ok you give me 2 points, I'll create another 1 of these lists and I'll simply take the x, sorry I shouldn't say x, I'm going to assume it's the x, the x-values are the two points, add them together, just right there, the y-values, add them together and return that list.

好，为了来认识到这一点,让我们来看一个简单的小例子，在你们的课堂手册上，你可以看到我写了一个小程序,它假设我得到了，这些点中的一些，我想对它们做一些操作，例如我想把它们加到一起，那么这里的第一小片，代码的意思是，好给我两个点，我会再创建一个数组。

麻省理工公开课 - 计算机科学及编程导论课程节选

It says if I want to get the length of a segment, going to pass in that instance, it says from that instance, get the start point, that's the thing I just found.

它的意思是如果我想要,得到一个线段的长度，首先要把这个实例传进来，然后对于这个实例，从开始点，取得x坐标，然后通过同样的操作。

麻省理工公开课 - 计算机科学及编程导论课程节选