Ключевые слова: alternative, asia, asian, bicycle, bike, building, car, carry, china, chinese, city, crossroad, crowd, direction, drive, electric, electric bicycle, hefei, leg cover, mobility, modern, motion, motorbike, motorcycle, movement, outdoor, outside, pavement, people, person, pollution, public, ride, rider, riding, road, scooter, street, summer, sunshade, town, traffic, transport, transportation, typical, urban, vehicle, windproof, windscreen, windshield,