ㄍㄜˊㄏㄤˊhángㄖㄨˊㄍㄜˊㄕㄢshān

  1. 諺語)​本行如同一座一樣遙遠比喻不了解其中甘苦狀況有道隔行如隔山別人體會編輯辭典苦處。」

different trades, worlds apart (idiom)​; to sb outside the profession, it is a closed book