In the heart of the Navajo Nation, in the middle of the high desert many kilometers from any town, one finds the only point in America where four states come together.

VOA: standard.2010.03.22

So, you might have noticed that we will have spent about 6 and 1/2 lectures just getting to the point where we have only one electron, so we're only up hydrogen so far.

你们可能已经注意到了,我们已经花了６周半的时间,来仅仅是讲到单电子问题的情形，我们现在只研究氢原子。

麻省理工公开课 - 化学原理课程节选

And that's a wonderful thing to have because it gives you that modularity, that encapsulation that basically says, when I create a point, the only way I can get at the values, is by using one of the defined methods, in this case it could be Cartesian, Cartesian and get all the pieces of that.

这是很棒的一件事情,因为它让你有了，模块性以及封装性，这基本上也就是说，当我创建了一个点，我能够得到它的值的唯一的方式，就是用一个定义好的方法，在这个例子中也就是。

麻省理工公开课 - 计算机科学及编程导论课程节选