1. The sunset cast a cupreous glow over the mountains.
日落使山脉染上了铜色的光辉。

2. She collects cupreous coins from various countries.
她收集来自各个国家的铜币。

3. The cupreous mineral deposits in this area are of great economic value.
该地区的铜矿床具有很大的经济价值。