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

　　她剛慶祝了自己在公司任職25周年。

　　My parents are celebrating 30 years of marriage.

　　我的父母親即將慶祝結婚30周年。

　　The college celebrated its silver jubilee last year.

　　這所學院去年舉行了建院25周年慶�；顒印�

　　They celebrated their silver wedding in May.

　　他們于五月份慶祝了銀婚紀念日。

　　We went out to a restaurant to celebrate.

　　我們到一家飯店里慶祝了一番。