The headmaster is waiting for someone to own up.校长在等着有人站出来承认。You'd better own up that you were responsible for the traffic accident.你最好承认你对那起交通事故负有责任.I advise you to own up at once.我劝你立即坦白....
They interceded with the authorities on behalf of the detainees.他们为被拘留者向当局求情。He gave witness on behalf of an accused person.他为被告作证.She gave witness on behalf of the accused person.她替被告作证....