Classifying garbage for his father is his moment of pleasure.

帮爸爸把废品分类是他的快乐时光。

But until now most of the work was on classifying the tracks.

但直到现在，大多数工作仍然还是给足迹分类。

We have a way of classifying portals which we think is helpful.

我们有一种对门户进行分类的方法，我们认为这种方法非常有用。

In Chapter 3, Question 24, we discuss the value of classifying services.

在第3章，第24问中，我们谈到了服务分类的价值。

ICD is the international standard for classifying mortality and morbidity.

ICD是对死亡率和发病率进行分类的唯一国际标准。