If you don't know a person's last name, use 'ma'am' or 'sir'.
如果你不知道一人的姓, 你应称呼他为 'ma'am' 或 'sir' 。
but as soon as a the question of prestige arises, as soon as you feel that you and some larger unit will be disgraced if you lose, the most savage combative instincts are aroused.
可是一量涉及到荣誉问题,一旦你想到你和某一团体会因为你输而丢脸时,那么最野蛮的争斗天性便会激发起来。