echelon
柯林斯词典
1. N-COUNT An echelon in an organization or society is a level or rank in it. 等级; 阶层[正式]
...the lower echelons of society. …社会的底层。
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echelon /ˈɛʃəˌlɒn/ (echelons)
剑桥词典
- a particular level or group of people within an organization such as an army or company
（军队、企业等组织的）等级，阶层，某一等级（或阶层）的所有人
These salary increases will affect only the highest echelons of local government . 这些加薪举措仅仅会涉及到当地政府的最高层。
the upper echelons of society 社会上层
military specialized
a special arrangement of soldiers , aircraft , or ships
（士兵、飞机或船只的）梯形编队，梯队 返回 echelon