音标：['eʃәlɒn]
n. 梯形, 梯阵, 梯次编队
vt. 排成梯队
vi. 形成梯队
【医】 梯列, 梯式
在线英汉词典

echelon的短语、例句：

echelon n 1 level of authority or responsibility; rank in an organization 职权的等级; 级别
the upper echelons of the Civil Service 政府部门的高层. 2 step-like formation of troops, aircraft, ships, etc 梯形编队
aircraft flying in echelon, ie in a line stretching backwards to the left or right 成梯队飞行的飞机.