designed to keep something undesirable such as illness, harm, or accidents from occurring
预防的,防止的;防病的
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preventive medicine .预防医学。
a medicine or other treatment designed to stop disease or ill health from occurring
预防药,预防疗法。
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preventiveadj.预防的;防止的;防病的
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preventingvt.预防;阻止;妨碍;制止;阻挡;(prevent的现在分词)
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preventionn.防止;阻挡;预防;妨碍