echelon

例句：

1. 1. The soldiers were organized into echelons for the attack.
   士兵们被组织成梯队进行攻击。
2. 2. The leader of the team is in charge of the echelon.
   团队的领队负责管理梯队。
3. 3. The company had to reorganize its echelon to meet the new deadlines.
   公司不得不重新组织其梯队以符合新的截止日期。