xiphodon 基本解释 n.剑齿兽 同首字母单词 x [eks] xanadu xanthan [ˈzænθæn] xanthate ['zænθeɪt] xanthe xanthein ['zænθɪɪn] xanthian xanthic ['zænθɪk] xanthin ['zænθɪn] xanthine ['zænθiːn] xanthinin ['zænθɪnɪn] xanthinuria [zænθɪ'njʊərɪə]