hierarchy of social rank

例句：

1. 1. The company has a strict hierarchy that dictates how employeesare managed.
   这家公司有严格的等级制度，决定了员工是如何被管理的。
2. 2. Thehierarchy ofthe organization is organized around acentral leadership team.
   组织的等级制度围绕一个中心领导团队组织。
3. 3. Thehierarchy ofthe city is divided into differentdistricts based on their population density.
   城市的等级制度根据人口密度分为不同的区域。