large cavern group
常見例句
- An ancient man-made near ground surface rock cavern group was found in Longyou County, Zhejiang Province. The 24 large caverns were excavated 2000 years ago.
浙江省西部龍游縣的龍游大型古地下洞室群由24 個(gè)洞室組成，該洞室群開挖于2000 年前。 返回 large cavern group