native copper

例句：

1. 1.The native copper mines in the region are of great importance to the local economy.
   该地区的本地铜矿对当地经济至关重要。
2. 2.The native copper ore is mined from the ground and then processed into various products.
   本地铜矿石是从地下开采出来的，然后加工成各种产品。
3. 3.Native copper is often used in electrical wiring due to its high conductivity.
   由于其高导电性，本地铜常用于电气线路中。