单词	black patina film
释义	black patina film 黑灰
随便看	water-harvesting afforestion water harvesting and utilization Water harvesting plant Water has a variable coefficient of expansion Water has no definite shape Water has permeatedthroughthe soil Water has permeated through the soil Water has sunk through sand Water has turned into ice water hatch water-hating water-hating agent water haul water hazard water hazard control measures water hazard detection water hazard prevention and controlling water hazards water hazards of mine water haze water head site water head site allocation water head spread water head test water health quality