动词 copper:

1. coat with a layer of copper

copperyadj.含铜的；铜制的；铜色的coppern.铜；铜币；警察；紫铜色；有紫铜色翅膀的小蝴蝶vt.镀铜copper paper铜纸复合板copper smelt铜冶炼copper brush铜刷copper steel铜钢coppernickeln.锌镍铜合金copper wound铜缠绕的copper group铜组copper stain铜斑copper-ion铜离子copper stave铜冷却壁

1. Copper conducts electricity better than other materials.
   铜比其他材料导电性能好。
2. The chemical symbol for copper is "Cu".
   铜的化学符号是Cu。
3. The copper has been burnished.
   铜已被抛光。
4. What color is copper sulphate solution?
   硫酸铜溶液是什么颜色？