TAG:交通, street, 城市环境, 汽车, pedestrian, 行人, 街道, bicycle, transportation, car, 自行车, urban_environment → 交通_街道_城市环境声
TAG:繁华, 喧嚣, street, 行人, 交通, urban_environment, 城市环境, transportation, vehicle, noisy, 车辆, 街道, busy, pedestrian → 繁华_街道_车声
