preventiven.
英 prɪ'ventɪv | 美 pri'vɛntɪv
中文n. 预防药；预防法\nadj. 预防的，防止的
预防药；预防法
adj. 预防的，防止的
词根词源
preventive (adj.)1630s, from Latin praevent-, past participle stem of praevenire (see prevent), + -ive. As a noun, from 1630s; in medical use from 1670s.
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