behalf

不幸的是，乔治今天不能和我们在一起，所以我很高兴代表他接受这个奖项。

Unfortunately, George cannot be with us today so I am pleased to accept this award on his ___behalf.

一名学生代表学校完成了气候项目。

A student completed the climate project on her school's ___behalf.

代表受组织委托感谢志愿者。

The representative thanked the volunteers on the organisation's ___behalf.