The party was still to be held, but it was an engagement party instead of a birthday party.

晚会仍然会举行，但是已经从生日晚会变成了订婚晚会。

youdao

Flowers. A party, it's a birthday party!

一些花儿，一次聚会，一次生日聚会！

youdao

My birthday is on Sunday. My parents are going to have a birthday party at home. I invite my friends to come to the party.

我的生日在星期天。我的父母在家里会有一个生日聚会。我邀请我的朋友来参加聚会。

youdao

Tensions brewed, for instance, when she organized a golf-themed 21st-birthday party for a student at University of Virginia—under orders from his mother in Epsom, England.

WSJ: Forget the Old College Try, Ring the Concierge

Much has been made of a 21st-birthday party Klein threw earlier this year for a model named Nick Gruber.

FORBES: Calvin Klein On Kate Moss, Ralph Lauren, Love And Other Drugs

Yet he seems to be giving his relationship with Mrs Parker Bowles—who is also divorced—an ever-higher profile, even throwing a well-publicised birthday party for her last month at Highgrove House, his country residence.

ECONOMIST: Crisis? What crisis?