預防免疫 yù fáng miǎn yì

DEFINITIONS

  1. prophylactic inoculation

CHARACTERS

預 yù prepare, arrange; in advance
防 fáng
HSK 5
defend; prevent; embankment
免 miǎn
HSK 4
spare; excuse from; evade
疫 yì
HSK 6
epidemic, plague, pestilence