- sector of breakdown
- 分类: classify
- 的: 4次方是 The fourth power of 2 i ...
- 部分: part; section; portion
- 分类的: assorted; categorical; classified advertisement; graded; systematic; taxonomic
- 种类：在某一分类系统中特别定义的部分: a class; category n.a specifically defined division in a system of classification
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