barren ore

例句：

1. 1. The mine has been barren for years due to poor management.
   由于管理不善，这个矿已经多年没有开采了。
2. 2.The barren ore is difficult to process and requires expensive equipment.
   这种贫瘠的矿石难以处理，需要昂贵的设备。
3. 3.The search for new resources in the barren ore fields has become a priority for the mining industry.
   在贫瘠的矿石矿区寻找新资源已成为矿业行业的优先事项。