assisting vehicle

例句：

1. 1. The police provided assistance to the injured during the accident.
   警察在事故中为受伤者提供了帮助。
2. 2. The ambulance was assisting a severely injured person on the roadside.
   救护车正在路边协助一位严重受伤的人。
3. 3. The firefighters were assisting the victims in extinguishing the fire.
   消防员正在协助受害者扑灭大火。