庆祝的英文是celebrate，其名词为celebration

例句

1.

She has just celebrated 25 years' service with the company.

她刚庆祝了自己在公司任职25周年。

2.

My parents are celebrating 30 years of marriage.

我的父母亲即将庆祝结婚30周年。

3.

The college celebrated its silver jubilee last year.

这所学院去年举行了建院25周年庆祝活动。