1. We need to categorise these documents based on their content.
我们需要根据这些文件的内容将其分类。

2. It can be difficult to categorise certain types of music into specific genres.
将某些类型的音乐归类到特定的流派中可能会有困难。

3. The library staff will categorise the books according to their subjects.
图书馆的工作人员将根据书的主题对其进行分类整理。