immunize
immunise, / ˈɪmjunaɪz; `ɪmjʊˌnaɪz/ v [Tn, Tn.pr]
~ sb (against sth) make sb immune (to a disease or infection), esp by injecting him with a vaccine 使某人免疫（尤指通过注射疫苗）
Have you been immunized (against smallpox) yet? 你接种过（抗天花）疫苗没有? Cf 参看 inoculate, vaccinate.