A narrow, often elevated walkway, as on the sides of a bridge or in the flies above a theater stage.
A narrow, often elevated walkway, as on the sides of a bridge or in the flies above a theater stage.
狭窄甬道狭窄的、通常升空的过道，如桥的侧边或戏院舞台上布景控制处的过道
A narrow, often elevated walkway, as on the sides of a bridge or in the flies above a theater stage.
狭窄甬道狭窄的、通常升空的过道，如桥的侧边或戏院舞台上布景控制处的过道