铜锈层 tóngxiùcéng patina Definitions Defs Origin Strokes Stroke Words Sentences Sents 铜锈 銅鏽 tóngxiù verdigris the green or bluish coating that forms on the surface of copper, brass, or bronze; patina; aerugo层 層 céng noun layer A physical sheet, thickness of material, or stratum covering a surface
