1. A green patina or crust of copper sulfate or copper chloride formed on copper, brass, and bronze exposed to air or seawater for long periods of time. 
   铜绿在长期放置于空气或海水中的铜、黄铜和青铜上形成的绿锈或硫酸铜、氯化铜的沉淀物
2. To furnish with a patina. 
   使生绿锈，产生光泽
3. To acquire or become covered with a patina. 
   生绿锈，覆有绿锈；产生光泽
4. A face etched with a patina of fine lines and tiny wrinkles. 
   一张轮廓美观而有细微皱纹的脸
5. Green or slightly green. 
   绿色或微绿色的

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• 1. 铜绿
  生粘土 green clay...铜绿 green patina...湿砂透气性 green permeability
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• 2. 銅綠
  銅基合金 cupro-metal...銅綠 green patina...銅氣脆性(鑄疵) hydrogen brittleness of copper
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