created sense approved 梯队/梯隊 · tīduì · echelon
梯队 / 梯隊
tīduì
echelon
a military formation or unit arrangement in parallel lines
直升机梯队整齐地划过天空。
noun
created sense approved 梯队/梯隊 · tīduì · tier
梯队 / 梯隊
tīduì
tier
a group of persons of a specific level or grade within an organization, often for succession
我们需要加强年轻干部的梯队建设。
noun