矿穴

例句：

1. 1. The mine islocated in the mountains.
   这个矿井位于山区。
2. 2.The miners are working hard to extractthe gold.
   矿工们正在努力开采黄金。
3. 3.The mine has been closed due to safetyconcerns.
   由于安全问题，矿井已经关闭。