noun🔗Share类别，种类，范畴。 A group, often named or numbered, to which items are assigned based on similarity or defined criteria."The library organized its books by category, such as fiction, non-fiction, and children's books. "图书馆将书籍按类别整理，例如小说、非小说和儿童读物。grouptypeorganizationsystemstructurethingessentialChat with AIVocabulary GamePractice Reading
noun🔗Share范畴, 类别。 A collection of objects, together with a transitively closed collection of composable arrows between them, such that every object has an identity arrow, and such that arrow composition is associative."The library organizes books into different categories, like fiction, nonfiction, and children's literature. "图书馆将书籍按照不同的类别进行组织，比如小说、非小说和儿童文学。mathlogicphilosophyscienceessentialChat with AIVocabulary GamePractice Reading
