n.偶然性
The rule is inapplicable to this occasion. 那规则对这一场合不适用。
All the solemnities of the occasion were observed. 那种场合下应该具有的一切庄重的仪式都举行了。
He had perked himself up for the occasion. 他为此事打扮了一番。
A funeral is a melancholy occasion. 葬礼是一个令人忧伤的场合。
He will help us as occasion requires. 必要时，他会帮助我们的。
On that occasion he looked a perfect fool. 在这个场合，他看起来就像一个大傻瓜。
