ambulance可数吗
ambulance是可数的，意思是救护车。
Five ambulances are on standby at the port.
五辆救护车在那个港口待命。
Ambulances rushed the injured to the hospital.
救护车迅速将伤员送往医院。
Fire engines and ambulances have priority over other traffic.
消防车和救护车比其他车辆有优先通行权。
When you are driving, you should make way for ambulances.
驾车时，你应该给救护车让路。
Ambulances that arrived earlier were actually attacked by police.
事实上，较早抵达的救护车遭到了警方袭击。
Taken out in ambulances, they would usually be back the following day.
他们充当了救护车的角色，他们必须在接下来的日子里经常来来往往。