occasion

We wore our most formal suits for the graduation ceremony, as it was a very special occasion.

(Chinese) 我们穿上了最正式的西装参加毕业典礼，因为这是一个非常特殊的场合。

I have met the famous author on several occasions, but we have never had a long conversation.

(Chinese) 我在好几个场合见过那位著名的作者，但我们从未有过深入的交谈。

The sudden change in government policy occasioned a lot of confusion among small business owners.

(Chinese) 政府政策的突然变化引起了小企业主们的极大混乱。

His unexpected resignation occasioned a frantic search for a suitable replacement.

(Chinese) 他的意外辞职引发了对合适接替者的疯狂搜寻。