短語詞組短語Pedestrian Detection safety system 行人探測安全系統(tǒng)pedestrian safety devices 行人安全設施Pedestrian safety campaign 行人安全方案Pedestrian Safety Enhancement Act 行人安全促進法案pedestrian comfort and safety 行人舒適感和安全感refuge safety island pedestrian island 供行人穿過馬路時躲避車輛的地方 返回 pedestrian safety