词汇	protective service
释义	protective service 防护设备,预防设施
随便看	arrival airfield Arrival Airfield Control Group Arrival and Assembly Area arrival and departure line arrival and departure lines arrival and departure of trains Arrival and departure operation arrival and departure procedures arrival-and-departure siding arrival and departure sidings arrival and departure track arrival and departure track terminal arrival and return arrival angle Arrival angle fluctuation arrivalarr arrival.arrived arrival at arrival at a conclusion arrival at a new stage arrival at mine full capacity arrival at port arrival at the port Arrival at Toronto International Airport arrival ballast