X字開頭的單詞或詞組
xanthateX particlexystx-ray cameraxiphoidxanthenexenophilexylotomyxanthininxylophonistXenopus laevisxanthophyllxysmaXENIXX-ray picturexylylx-kneeX directionxenodiagnosisxenic acidxanthicxanthomatosisxanthomaxylomaxmitterxerophagyxanthotoxinX zonexanthatinxerographyxanthinexerogelxyloidxibornolx feverxiphoid processX-ray diffractionxerosisxanchromaticxylenolxanthodermaXON/XOFF