What do you mean by this signal?

What do you mean by this signal? What do you mean by this word?翻译 do you understand what l mean by doing this 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? What do you mean by that? what do you mean by success? what do you mean by doing sth? what do you mean by love