an occasion when someone is asked to come to a person's home or to a particular place in order to do a job, help someone, etc.应召出工(前往某人住宅或特定某处执行某项工作或协助某人)
Many plumbers charge double for an emergency call-out over the weekend.许多水管工在周末紧急出工时会收双倍费用。
call-out fees/charges/service出工费/收费/服务
The mountain rescue service had several call-outs last week.山地救护队上周好几次应召出动。