am‧bu‧lance S3 / æmbjələns, æmbjʊləns / 名词 [可数名词]

a special vehicle that is used to take people who are ill or injured to hospital :  

the ambulance service

ambulance staff/crew/worker

The ambulance crew removed him from the wreckage.

the ambulance service

by ambulance

Mike had to be taken by ambulance to hospital.

Do you think we need to call an ambulance (= phone to ask an ambulance to come ) ?