And the problem is, that we want to build this abstract data type, but we'd like to basically know what kind of object is it, and what functions actually belong to it, how do we use them?

然后我对它们运行了这个方法，就是这一小段代码这个方法,这有意义么？,当然没有了，对不对？,因为你知道，当你把两个极坐标，表示的点进行相加运算的时候？

麻省理工公开课 - 计算机科学及编程导论课程节选

I think of data hiding as basically saying, one can only access instance values, or, we'll call them that, instance values through defined methods.

一个人仅仅可以访问实例变量，或者，我们可以这么来说，通过定义好的方法，来访问实例的变量。

麻省理工公开课 - 计算机科学及编程导论课程节选

Well basically what we're doing is we're giving ourselves the ability to create data types the same way that we have some built-ins, so we have things like int, float, string, these are built-in data types.

就是要赋值我们自己创建,和内置的数据类型,相同的数据类型的能力,我们有一些内置的数据类型，如int，float，string等，如果你考虑下这些数据类型。

麻省理工公开课 - 计算机科学及编程导论课程节选

That is basically saying, given some collection of data, I want to have again a looping mechanism, where now my process is, walk through this, the collection one element at a time. And for that, we have a particular construct, called a FOR loop.

现在我的过程就是,通过一个个访问这个集合中,的元素的方式，来遍历这个集合,为了达到这个目的，我们有一个特定的结构，成为FOR循环。

麻省理工公开课 - 计算机科学及编程导论课程节选