ech·elonBrE/ˈeʃəlɒn/NAmE/ˈeʃəlɑːn/noun[usually pl.]arankorpositionofauthorityinanorganizationorasociety职权的等级;阶层◆thelower/upper/top/higherechelonsoftheCivilService公务员的低层/上层/最高层/高层anarrangementofsoldiers, planes, etc. inwhicheachoneisbehindandtothesideoftheoneinfront(士兵、飞机等的)梯形编队,梯队