Ключевые слова: air, allergy, asia, asian, blue, care, casual, china, chinese, city, cityscape, clothes, clsoe, disposable, doctor, face, female, flu, girl, health, hygiene, ill, illness, infection, influenza, japanese, korean, lady, mask, medical, nature, park, patient, plant, pollution, prevention, protection, protective, safety, sick, surgical, taiwanese, town, tree, up, virus, wear, wearing, winter, woman,