相关单词近義詞 cave 洞穴, grotto 洞穴, hollow 空的, pothole 坑洞, cavity 洞, fissure 裂縫, tunnel 隧道, hole 洞, catacomb 地下墓穴, opening 開口underground chamber, 地下洞室, chamber 室, underground 地下的, cavern out 挖空臨近詞cavernous, caveat, Caverni, caverna, caverned, cavernosa, cavernose, cavernula, cavernosu, cavernoma, cavernomas, cavernosus 返回 caverning