相关单词同義詞hollow, cuppy, 近義詞 hollow 空的, sunken 沉沒的, depressed 沮喪的, dished 中凹的反義詞convex, 中凸的臨近詞conceal, concatenate, concaver, concaveup, concave up, concave die, concave bow, concaveness, concave key, concave bar, concave saw, concavedown相似詞conation, CONCACAF, concatenate, concatenation, conceal, concealer, concealment, concede, 返回 concave