1.油路： 燃油管（供油管，溢流管），电喷管
Fuel line: fuel pipe (supply pipe, overflow pipe), fuel injection pipe
2.水路： 散热器填充管，排水管，旁路软管
Waterway: radiator filler pipe, drain pipe, bypass hose.
3.气路： 真空管，排气管，传动箱通气管，二次补气管
Airway: vacuum pipe, exhaust pipe, transmission box ventilation pipe, secondary air supply pipe
