insure
verb uk/ɪnˈʃɔːr/ us/ɪnˈʃʊr/
[ I or T, usually + adv/prep ]（给…上）保险，（为…）投保
to protect yourself against risk by regularly paying a special company that will provide a fixed amount of money if you are killed or injured or if your home or possessions are damaged, destroyed, or stolen
The house is insured for two million dollars. 该房子投保了200万英镑。
All our household goods are insured against accidental damage. 我们家里所有的物品都保了意外损失险。
[ + obj + to infinitive ] I'm not insured to drive his car. 我没有相关的保险，不能开他的车。
[ T ]为（某人或某物）提供保险;承保
to provide insurance for someone or something
They refused to insure us because they said we're too old. 他们拒绝为我们提供保险，因为他们认为我们年纪太大了。
Many companies won't insure new or young drivers. 许多公司是不会为新司机或年轻司机提供保险的。
Phrasal verb
insure against something 对…采取预防措施
to do something in order to prevent something unpleasant from happening or from affecting you
We thought we'd insure against rain by putting a tent up where people could take shelter. 我们想为了以防万一得支起一个防雨帐篷，这样大家就可躲雨了。