She made an emotional public appeal on her son's behalf.

她代表儿子发出了感动人心的公开呼吁。

Secret Service officer Robin Thompson spoke on behalf of his colleagues.

情报局官员罗宾·汤普森代表他的同事们讲了话。

'What do you mean?' I asked, offended on Liddie's behalf.

“你什么意思？”我问道，替莉迪感到愤愤不平。