Ключевые слова: air, air pollution, alone, asian, bridge, city, connection, copy space, damage, danger, digital device, dirty, ecology, electronics, environment, environmental, gadget, global, handsome, health, industrial, industry, male, man, medicine, people, person, polluted, pollution, problem, protective mask, rubbish, safety, selective focus, side view, sitting, smartphone, teen, teenager, toxic, trash, urban, waste,