Mining well

• 矿井

Mining well的用法和样例：

例句

1. More than 60 pits in old mining areas are being extended.
   老矿区的六十多个矿井正在扩建。
2. Deep mining first blighted the West Virginia landscape.
   深挖矿井首先使弗吉尼亚州的风景遭到破坏。