white copperas

例句：

1. 1.The white copperas have been mined for centuries.
   这些白铜矿已经开采了几个世纪了。
2. 2. The white copperas are a valuable resource for metallurgy.
   这些白铜矿是冶金业的重要资源。
3. 3.The white copperas were discovered in the mountains of Peru.
   这些白铜矿是在秘鲁的山区被发现的。