一周年的缩写是:Ann.一周年:the first anniversary一周年庆:The anniversary celebration 扩展资料Observances of the first anniversary took place along the Gulf of Mexico on Wednesday.周三,泄漏第一周年纪念活动在沿墨西哥湾地区进行。Tomorrow marks the first anniversary of his chairmanship and the news from the markets is good.明天将伯南克就职一周年纪念日,从市场传来的消息较为积极。Today is one day which is worth commemorating, is I knows the first anniversary commemoration day with the husband!今天是值得纪念的.一天,是我跟老公认识一周年纪念日!