what do you mean by that中的by是什么词性,什么意思?

what do you mean by that中的by是什么词性,什么意思? What do you mean by that? what do you mean by say that 的by say that是什么成分 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 saying thae?（的中文意思是什么啊?） What do we mean by personality这句话什么意思 翻译 What do you mean by "WTO" what do you mean by 翻译 what do you mean by sth. What do you mean by doing so? What do you mean by saying so?