Use descriptive names for your variables, functions, and classes.

为变量、函数和类使用描述性名称。

So a lot of this class will be transforming random variables.

所类的很多内容都会转换随机变量。

Encapsulation can be achieved by: Declaring all the variables in the class as private and writing public methods in the class to set and get the values of variables.

封装可通过式实现：将类中的所有变量声明为 private，并在类中编写 public 法设置和获取变量的值。

The magic is that for a huge  category of initial distributions, this process of adding a whole bunch  of random variables drawn from that distribution always tends towards this  one universal shape - a Gaussian.

神奇的是， 对于一大类初始分布，添加从该分布中提取的一大堆随机变量的过程总是倾向于通用形状 - 高斯。