formation-class

例句：

1. 1. The army has a formation of tanks and infantry.
   军队拥有一支坦克和步兵组成的编队。
2. 2.The new formation class is designed for speed and maneuverability.
   新编队类设计用于速度和机动性。
3. 3.The formation class is responsible for the safety and security of the troops.
   编队负责保障部队的安全与安全。