on the occasion of a ceremony 在典礼之际
on the occasion of a celebration 在庆祝活动之际
on the occasion of one's birthday 在某人生日之际
on the occasion of the meeting 在会议之际
on this occasion 在这个场合
1. We held a special event on the occasion of the school's anniversary.
我们在学校周年纪念之际举办了一场特别活动。
2. She gave a speech on the occasion of her graduation.
她在毕业之际发表了演讲。
3. A gift was presented to him on the occasion of his retirement.
在他退休之际，有人送给他一份礼物。
4. The company released a new product on the occasion of its tenth anniversary.
公司在成立十周年之际推出了一款新产品。
A: We prepared a special program on the occasion of the teacher's retirement.
A：我们在老师退休之际准备了一个特别节目。
B: That sounds like a meaningful way to celebrate.
B：这听起来是一种很有意义的庆祝方式。
1) 表示某个重要事件发生的时间背景
2) 用于正式表达“值……之际”
3) 常见于新闻、演讲、祝词和正式文件中
1. 在……的时候；值……之际
e.g. He visited his hometown on the occasion of the festival.
他在节日期间回到了家乡。
2. 在某一特殊事件或重要场合发生时
e.g. They met on the occasion of an international conference.
他们在一次国际会议期间相遇。
phrase
1. A phrase used to say that something happens during a particular event, time, or special situation.
Synonym: during, at the time of