v.保证( insure的第三人称单数 )；确保；为…保险；投保 双语释义：v.(动词)vt. 保险,投保 make a contract that promises to pay sb an amount of money in case of accident, injury, death, etc., or damage to or loss of sth英英释义： insure[ in'ʃuə ]v.be careful or certain to do something; make certa