complex ore

例句：

1. 1.The mining company is looking for complex ore deposits in the area.
   这家矿业公司正在该地区寻找复杂的矿石矿床。
2. 2.The discovery of this complex ore deposit has revolutionized the local economy.
   这种复杂矿石矿床的发现已经彻底改变了当地的经济格局。
3. 3. The processing of complex ore requires advanced technology and expertise.
   处理复杂的矿石需要先进的技术和专业知识。