act on behalf of

When a person appoints another to act on his behalf in litigation, he must submit to the people's court a power of attorney bearing his signature or seal.

如果某人委托他人代为诉讼，其必须向人民法院提交由其签名或盖章的《授权委托书》。

Unlike an officialairraid siren, this was an act on behalf of the people for the people.

与正式的空袭警报不同, 这是一批人为另一批人主动做出的.

Act as a HR coordinator on behalf of the branch head.

代表分公司总经理协调员共关系.

The interstate commerce commission established by the act was chaired by a lawyer with experience of the railroad industry acquired, naturally, by acting on behalf of his railroad clients.

根据此项法案设立的州际商务委员会（interstate commerce commission），主席由一位具有铁路行业经验的律师担任这自然是因为他能够代表铁路行业客户的利益。

The legal guardian must act on behalf of the child.

法定监护人应该维护这个孩子的利益.