maintenance worker

例句：

1. 1.The maintenance worker has been fixing the air conditioner for hours.
   维修工已经修理空调几个小时了。
2. 2. The maintenance worker is responsible for maintaining the equipment.
   维修工负责维护设备。
3. 3.The maintenance worker needs to check the oil and lubricate the gears regularly.
   维修工需要定期检查油和润滑齿轮。