1 [C] an event or situation 事情；情景；活动: The whole affair has been extremely unpleasant. 整件事情令人很不愉快。

2 affairs [pl] important personal, business, national, etc matters （个人、业务、国家等的）重要事宜: the minister for foreign affairs 外交部长current affairs (= the political and social events that are happening at the present time) 时事

3 [sing] something private that you do not want other people to know about 私事: What happened between us is my affair. I don't want to discuss it. 我们之间的事是我的私事。我不想拿出来讨论。

4 [C] a sexual relationship between two people, usually when at least one of them is married to sb else 私通；奸情；婚外恋: She's having an affair with her boss. 她和她的上司私通。