N-VOC
先生(對男子的稱呼，尤為兒語或用于稱呼不知姓名的男子)
Men are sometimes addressed as mister, especially by children and especially when the person talking to them does not know their name.
例句
Look, Mister, we know our job, so don't try to tell us what to do.
嘿，先生，我們知道自己該干什么，不用你指揮。