“层级”用英语怎么说？

他还有各个层级的管理经验。He has also had managerial experience on every level.有时候我们也看到一般层级顺序倒置的现象.Reversals of the average order of the hierarchy are sometimes observed.您如何运用公共关系来做为地区层级的社员工具 呢 ?How can you use public relations as a ...