Another example is the word siren, familiar to us as the mechanical device that makes such an alarming sound when police cars, ambulances, or fire engines approach.
2
我可以连接另一辆救护车,一辆出租车,一辆警车和一辆消防车。
I could hook up another ambulance, a taxicab, a police car and a fire truck.
3
警车、消防车、救护车、工程救险车应当严格按照规定的用途和条件使用。
Police cars, fire engines, ambulances and engineering emergency vehicles shall be used strictly pursuant to the prescribed purposes and conditions.