“大洞穴”的英语可以翻译为：cavern ...

女孩在大洞穴中迷了路.The girl lost her way in the cavern.他们勘探了这个悬崖底部的大洞穴.They explored the large cavern at the base of this cliff....

“大洞穴”的拼音为：dà dòng xué...