自動免疫 zì dòng miǎn yì

DEFINITIONS

  1. active immunity

CHARACTERS

自 zì
HSK 3
self, private, personal; from
動 dòng move, happen; movement, action
免 miǎn
HSK 4
spare; excuse from; evade
疫 yì
HSK 6
epidemic, plague, pestilence