窟

例句：

1. 1. The cave is dark and damp.
   这个洞穴又黑又潮湿。
2. 2. He crawled into the cave to escape the rain.
   他爬进洞穴躲避雨水。
3. 3. The cave was filled with strange creatures.
   洞穴里充满了奇怪的生物。