外人
?stranger;outsider
?foreigner;alien
別客氣，我又不是～。Don’t stand on ceremony,I’m no stranger./你對我們來說，不是～。You are no stranger to us./你說吧，這里沒～。Speak up.You are among friends./這是我們的內部事務，不需～過問。This is our domestic affair and none of the business of outsiders./不足為～道not to be mentioned to outsiders