Ключевые слова: air, asia, asian, breath, breathing, china, city, climate, closeup, concept, damage, dirty, disease, emission, environment, exhaust, face, female, flu, girl, group, health, healthcare, isolated, lifestyle, male, man, mask, medical, mouth, patient, people, pollution, prevention, protect, protection, sick, smog, student, team, toxic, unhealthy, urban, virus, woman, young,