1. 分类;归类;类别;种类
A classification is a division or category in a system which divides things into groups or types.

1. the act of distributing things into classes or categories of the same type

Synonym: categorizationcategorisationcompartmentalizationcompartmentalisationassortment

2. restriction imposed by the government on documents or weapons that are available only to certain authorized people

3. the basic cognitive process of arranging into classes or categories

Synonym: categorizationcategorisationsorting

4. a group of people or things arranged by class or category

Synonym: categorizationcategorisation