需要一份英文的委托书

我在国外的教授需要我一份英文的委托书,委托他帮我询问我另一个学校的申请问题~~~~~~~拜托帮帮忙啊~~~~~
这是他写的:Please write me an email to authorise me to discuss your application.

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This is to authorize Mr. xxx for the application discussion on behalf of me.

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