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。
2affairs [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。