nonvaccinationWiktionary 原文构词拆分non-前缀Used in the sense of no or none, to show lack of or failure to perform; or in the sense of not, to negate the meaning of the word to which it is prefixed.+vaccination词根/词干词源说明From non- + vaccination.释义（英文）名词 NounAbsence of vaccination; failure to vaccinate.