词根词缀：calypto-, calypt-

【来源及含义】Greek: covered, cover; hide, hidden; conceal, concealed

【同源单词】apocalypse, apocalypst, apocalyptic, apocalyptic literature, apocalyptic number, apocalyptical

词根词缀：eu-

【来源及含义】Greek: good, well, normal; happy, pleasing; used as a prefix

【同源单词】aneuploid, aneuploidy, eubiotics, Eucalyptus, eucentric, eucharist