event 和affair有什么区别啊

event 和affair有什么区别啊 affair和event有什么区别? affair event incident有什么区别 affair和event的区别? accident,event,affair都是代表事件的意思,请问有什么具体区别 event 与affair 的区别? incident,accident,event,affair 和 business的用法区别? event, matter, thing, affair这几个单词有什么不同? event ,matter,issue, affair的区别 affair business event matter thing 的区别 event和waterproof有什么区别 incident,accident和event有什么区别