隔行如隔山
gé​háng​rú​gé​shān

worlds apart

  • created sense approved 隔行如隔山 · gé​háng​rú​gé​shān · worlds apart

    隔行如隔山

    gé​háng​rú​gé​shān

    worlds apart

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

    虽说都是技术工作，但隔行如隔山，我对他那个领域确实一窍不通。

    expression

    created sense