预防免疫

yù fáng miǎn yì

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释义

  1. 1. prophylactic inoculation

预防免疫 的构成词

免
miǎn

to excuse sb

免疫
miǎn yì

immunity (to disease)

防
fáng

to protect

预防
yù fáng

to prevent

疫
yì

epidemic

预
yù

to advance