相关单词近义词 cavern 大洞穴, cave 洞穴, hole 洞, tunnel 隧道, pothole 坑洞, hollow 空的, opening 开口, den 兽穴, grot 洞穴临近词ground, grotesque, grottos, Grottola, Grottoli, Grottolo, Grottole, Grotto Art, Grotto rock, Grotto arts, grotto sites, Grottos mural 返回 grottoes