n.保证，担保；（人寿）保险；确信；厚脸皮，无耻 变形： 复数：assurances 双语释义：n.(名词)[C]保证,担保,确信 a firm statement that sth is certainly true or will certainly happen; promise[U]把握,信心 confident belief in one's own ability and power[U](人寿)保险 insurance against events that are certain rath