1 [C] a particular time when sth happens (某事发生的)时刻,时候;场合:
I have met Bill on two occasions.我见过比尔两次。
2 [C] a special event, ceremony, etc 特别的活动;典礼:
Their wedding was a memorable occasion.他们的婚礼是值得纪念的大事。
3 [sing] the suitable or right time (for sth) (做某事的)时机,机会:
I shall tell her what I think if the occasion arises (= if I get the chance).待有合适的时机,我就会把我的想法告诉她。☞You use occasion when you mean the time is right or suitable for something I saw them at the funeral, but it was not a suitable occasion for discussing holiday plans. You use opportunity or chance when you mean that it is possible to do something I was only in Paris for one day and I didn't get the opportunity/chance to visit the Louvre. 指某时刻适合做某事时,用occasion:I saw them at the funeral, but it was not a suitable occasion for discussing holiday plans.我在葬礼上见到他们,但那不是讨论假期计划的适当时候。指某时刻有可能做某事情时,用opportunity或chance:I was only in Paris for one day and I didn't get the opportunity/chance to visit the Louvre.我只在巴黎逗留了一天,没有机会去参观罗浮宫。