bork

例句：

1. 1. The explorers found a large bork in the forest.
   探险队在森林里发现了一个大洞穴。
2. 2. She scurried into a small bork to hide from the storm.
   她急忙钻进一个小洞穴来躲避暴风雨。
3. 3. The cave was dark and damp, making it difficult for the miners to work.
   这个洞穴又黑又湿，使得矿工们难以工作。