1)open stairway,敞开楼梯2)open-styled stairs,开敞楼梯间3)open stairwell,敞开楼梯间4)unenclosed stair,敞开式楼梯5)An open balcony in a theater.,剧院里开敞的楼座6)The elevator was going down.,电梯在往楼下开。
用法和例句
Preliminary discussion on fire safety measures design of open stairwell;