短语词组短語illuminated directional exit sign 出路指示燈牌Directional E Sign 方曏標志directional exit sign 指曏出口標記advance directional sign 前置指路標志;方曏預告標志;預告方曏指示標志;外加劑Indoor Triangle Directional Sign 室內三角形指示牌 返回 directional sign