合作派对用英语叫做"collaborative party". "Collaborative"这个词来源于拉丁文"collaborare"，意思是"合作"。一些例句如下：

We're planning a collaborative party for our office next week. 我们正在为下周的办公室策划一场合作派对。
The collaborative party was a huge success, thanks to everyone's hard work. 由于大家的努力，合作派对成功了。
I'm looking forward to the collaborative party - it's always fun to work together with friends and colleagues. 我期待着合作派对-和朋友和同事一起工作总是很有趣的。

希望这些例句能帮助您。