n.机会( occasion的名词复数 );时刻;原因;需要;
例句:
This sort of thing is usual on occasions like this.
这类事情在这种场合是常见的.
I've met him on several occasions.
我曾见过他几次。
It was thought bad form to discuss business on social occasions.
在社交场合讨论生意被认为是不礼貌的。