troop train

例句：

1. 1.The troops were marching in perfect formation.
   军队整齐地行进。
2. 2. The train was filled with passengers and staff.
   火车上挤满了乘客和工作人员。
3. 3. The soldiers practiced their troop training every day.
   士兵们每天练习他们的队列训练。