preventive
US /prɪˈven.t̬ɪv/
UK /prɪˈven.t̬ɪv/
1.
予防
designed to keep something undesirable such as illness, harm, or accidents from occurring.
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•
preventive medicine
1.
予防
a medicine or other treatment designed to stop disease or ill health from occurring.
:
•
quinine was used as a malaria preventive