短語詞組短語obstructed flow 阻塞流ventilation obstructed 通風不暢obstructed stream 阻塞河obstructed distance 障礙距離light obstructed 遮光效應be obstructed 窒礙obstructed spillway 設閘溢洪道obstructed vision 妨礙視線Biliary obstructed 膽管阻塞 返回 obstructed