as different as the waters of the Jinghe and the Weihe—entirely different; make a clear distinction between purity and impurity
❍ 谁都记得，我们俩当时所采取的态度～。Everybody remembers that the attitudes we two adopted at the time were entirely different.
泾渭分明jing wei fen ming
as different as the waters of the Jinghe River and the Weihe River—entirely different
泾渭分明jīnɡ wèi fēn mínɡ
泾、渭：指泾水和渭水。泾水清澈，而渭水浑浊。比喻界限清楚，是非分明。entirely different, make a clean distinction between purity and impurity, be well defined