【醫(yī)】 retrovaccine

還原的英語翻譯：

deoxidize; reduction; return to original condition; revivification
【計】 restore; revert
【化】 disoxidation; reduction
【醫(yī)】 reduce; reduction

牛痘苗的英語翻譯：

【醫(yī)】 bovine lymph; bovine vaccine; Jennerian vaccine; lymph calf
lymph vaccine; smallpox vaccine; vaccinum vacciniae; vaccinum variolae
variolovaccine