outsource maintenance

• 外包维修服务

outsource maintenance的用法和样例：

例句

1. We offer a full maintenance service.
   我们提供全面的设备维修服务。
2. Naturally, building owners would like to have quality management and maintenance services at reasonable costs.
   大厦业主都希望以合理价格获得优质管理维修服务。