掘洞穴

例句：

1. 1. The children were digging in the sandbox.
   孩子们正在沙箱里挖。
2. 2. The animals dug a tunnel to escape from the rain.
   动物们挖了一条隧道来躲避雨水。
3. 3. The farmer dug up the roots of the plants for fertilizer.
   农民挖出植物的根作为肥料。