ig·nor·anceAWBrE/ˈɪɡnərəns/NAmE/ˈɪɡnərəns/noun[U]~ (of/aboutsth)alackofknowledgeorinformationaboutsth无知◆widespreadignoranceof/aboutthedisease对这种疾病的普遍不了解◆Theyfoughtalongbattleagainstprejudiceandignorance. 他们同偏见与无知进行了长期的斗争。◆Shewaskeptinignoranceofherhusband'sactivities. 关于丈夫的活动，她一直蒙在鼓里。◆Childrenoftenbehavebadlyoutof/throughignorance.儿童往往出于无知而不守规矩。Saying that you don't know something or giving yourself time to think表示不知道或需要想一想
There are various ways of telling people that you haven't got the information they are asking for.告诉别人你不知道他们想要了解的信息，有多种方式：
◆I really don't know.我确实不知道。
◆I'm afraid I don't have the faintest idea.很抱歉，我一点都不知道。
◆Sorry, I have absolutely no idea.对不起，我完全不知道。
◆Has anyone left a message? No, not to my knowledge/not as far as I know.有谁留过言吗？没有，据我所知没有。
◆Well, that's a good question.嗯，这是一个很好的问题。
◆Yes, that's an interesting point/idea.是的，这观点很有意思。
