cavern 名词复数:caverns 过去式:caverned 过去分词:caverned 现在进行时:caverning 词形变化: 动词过去式: caverned | 动词过去分词: caverned | 动词现在分词: caverning | 动词第三人称单数: caverns | 词义辨析: 同义: n.大洞穴 cave grotto tunnel hole catacomb hollow underground chamber 同义参见: opening