铜锈层 Traditional 銅鏽層 tóng xiù céng 🔊 patina + Keep this word Meanings tóng xiù céng 銅鏽層 patina Its characters 铜tóngcopper (chemistry)HSK 6锈xiùto rustHSK 7–9层céngto pile on top of one anotherHSK 3