stopping a train at a target point

例句：

1. 1.The police officer stopped the car before it hit the pedestrians.
   警察在汽车撞上行人之前停下了车。
2. 2. The driver had to stop the engine because of a flat tire.
   司机因为轮胎爆胎不得不停下发动机。
3. 3. The train was stopped at the station for repairs.
   火车在车站停下来进行修理。