(1)保险，投保(make a formal agreement and pay money to an insurance company to protect one's life，property，etc against sickness，death，loss，damage，etc)[T+n，T+n+prep(against)，I]：He is～d.他投了保。Is your car～d?你的汽车保险了吗? The goods were fully～d. 这些货物都投了保。～one's home against fire /theft /accidental damage 为自己的家保火灾/失窃/意外损失险;The insurance company～d his house against fire. 保险公司为他的房屋保了火险。～one's employees (oneself) against accidents/premature death/prolonged illness 为雇员(自己)投保意外事故/早逝/长期患病险;～one's property/the contents of one's house for $60，000 为自己的财产/家庭财产保险六万美元;～one's life/oneself for $50，000 为自己投保五万美元人寿险;～at a low premium 付低额保险费保险;～against death 保寿险;〖同〗secure;

→ the in′sured n 被保险人(者);

(2)预防(prevent sth unpleasant from happening or protect oneself in case it happens)[T+n+prep(against)]：More care will～you against making so many mistakes. 多加小心你就不会犯这么多的错误。～against defeat 防止打败仗;In years of good rainfall they expand their stocks to～against drought. 在雨水充足的年份，他们增加蓄水量以防干旱。

→ in′surer n 保险商(公司);承保人;in′surable adj 可被(适于)保险的;in′surance n;

【辨异】insure 与assure 和 ensure的区别见ASSURE。