subdivision
noun- [uncountable]
the act of dividing a part of something into smaller parts 再分割；再分；细分 Subdivision among major sections of the index is necessary. 有必要对指数的主要部分进行细分。
- [countable]
one of the smaller parts into which a part of something has been divided 进一步分成的部分；分支；分部 a police subdivision (= the area covered by one particular police force) 警察部门下属的管辖分区 subdivisions within the Hindu caste system 印度教种姓制度内的不同等级
- [countable] (North American English)
an area of land that has been divided up for building houses on （分割成小块的）建房土地