They fixed on him to speak on their behalf.

他们已经确定他作为代表发言。

youdao

The company authorized her to speak on their behalf.

公司授权她代表公司发言。

youdao

I said that it has no help, I see people suffering and I want to speak on their behalf.

我说那没有用，我看见过在受苦的人们而我想代表他们说话。

youdao

She is one of several Goodwill Ambassadors who have lent their fame to this video to speak out on behalf of the millions of children who continue to be cruelly taken advantage of.

VOA: standard.2009.10.08

And the entire people of Israel appreciate it, and I speak on their behalf.

WHITEHOUSE: President Obama & Prime Minister Netanyahu: "The Common Goal is Peace" | The White House

We do not know much about them and they rarely, if ever, appear in public to speak on behalf of their party.

FORBES: Egypt's Veiled First Lady Provides Clues To Where Women Fit Into New Egypt

We do not know much about them and they rarely -- if ever -- appear in public to speak on behalf of their party.

CNN: Egypt's Islamists: Much to prove on women's rights