单词	免税的
释义	免税的医duty-free
随便看	column electrophoresis column element column elementary operation column elevation column elevator column-elimination columnella columnella nasi column elution column elution program column elution programme column enable column end conditions column end-fixity coefficient column end plug column-end plug column engaged go the wall column equilibration column equivalence column equivalent columner diffraction pattern column establishing column establishment Column evaluation column evaporation