yù fáng
to prevent
to take precautions against
to protect
to guard against
precautionary
prophylactic
yù fáng cuò shī
protective step
protective measure
yù fáng xìng
prophylactic
preventative
protective
yù fáng zhēn
immunization injection
fig. forewarning
heads-up
preventive measure
yù fáng fǎ
prophylaxis
medical prevention
jí bìng yù fáng zhōng xīn
Center for Disease Control (US)
yù fáng qì
prophylactic equipment
condom
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Example Usage