cupro-

例句：

1. 1. The old copper pot has turned into a beautiful green color.
   那把旧铜壶已经变成了美丽的绿色。
2. 2.The copper wire is tarnished and needs to be polished.
   铜线已经生锈了，需要打磨。
3. 3. Copper is a valuable metal that is often used in electrical wiring.
   铜是一种宝贵的金属，通常用于电气线路。