What do you mean by saying so?

What do you mean by saying so? what do you mean by saying What do you () by saying so what do you mean by saying that shit What do you mean by saying that?翻译为汉语. What do you mean by doing so? what did you mean by saying What do you mean by saying that中为什么要用by来做介词 what do you mean that a by say b through say c by saying d t 这是啥意思?英译中I'm at a loss as to what you mean by saying so! Bob,can you tell us what ( )you mean by saying that?应用do 还是d what do you mean by saying thae?（的中文意思是什么啊?）