waste copper

例句：

1. 1.The factory isted a lot of waste copper in the process of production.
   工厂在生产过程中浪费了大量废铜。
2. 2. We need to find ways to wastage less and recycle more.
   我们需要找到减少浪费和回收更多资源的方法。
3. 3. The old building had been wasted copper, which made it difficult for us to repair it.
   这座旧建筑被浪费了太多的铜，这使得我们很难修复它。