挖洞

例句：

1. 1. The farmer dug a well to provide water for his farm.
   农民挖了一个井来为他的农场提供水。
2. 2. She dug into the dirt and found some old coins.
   她挖进土里发现了一些旧硬币。
3. 3. He dug out the roots of the tree to save it from dying.
   他挖出树根来拯救这棵树免于死亡。