有一句英文是speak as a...

speaking as a completely objective third-party outsider/observer with absolutely no personal interest in the matter,I think...

作为一个完完全全客观的局外人，对这件事不附带任何的感情色彩，我觉得...

记得这句话，是我在一部电影--She's the man里看到的,是表明自己立场的话，不知道是不是你要找的那一句，这一句话说出来挺好笑的,希望我的回答对你有帮助 ^_^

P.S. third-party是第三者，第三方的意思
我在这里把third-party outsider/observer翻译为局外人

这个怎么搞，都不知道你想干什么
speak as a teacher?
speak as a pig?
speak as a common people?

你总得给点提示吧。