To add new methods to a particular class of type t, it only needs to define static methods that accept type t as the first parameter.

要向类型为t的特定类添加新方法，只需定义一个静态方法，它接受类型T作为第一个参数。

youdao

I've made the number a member variable within the Classifier2 class, which allows me to avoid passing it around as a parameter to a bunch of static methods.

我把数字变成是Classifier 2类中的成员变量，这将允许我避免将其作为参数传递给一大堆静态方法。

youdao

In Listing 2, I declare a single static method that accepts a String parameter (traditionally called self, but you can call it whatever you like) that represents the class I'm adding the method to.

在清单2中，我声明了一个单独的静态方法，接收String参数(通常称为self，但是您可以随意为其命名)，代表我向其中添加方法的类。

youdao