X字开头的单词或词组
xylosic acidxanthosine monophosphatexeroderma ichthyoticaxylosonexyloketosuriaxanthoproteie acidxiphodidymusxylenesulfonatexanthopterinex-certificatexanthogranulomatosisxylene trichloridexylosidexylansX-ray spectrographxylylenediaminexanthiolxylene disulfonic acidxanthoxyli fructusxerophthalmia superficialisxystusx-linked recessivexeresxxivxanthylic-nucleic acidxanthine nucleotidexenocrystxuanwuxoxeroprintingxslxoffxmsxanthatesxenolithxiphisternumxxviiixylologyxylophonistsxanthinesxtixenon(xe)
