英文關鍵字
2019ncov
air
allergy
asia
bacteria
care
china
chinese
city
corona
coronavirus
covid19
disease
epidemic
face
flu
girl
health
hygiene
ill
illness
infection
influenza
mask
medical
medicine
outbreak
pandemic
people
person
pneumonia
pollution
prevention
protect
protection
protective
quarantine
respiratory
risk
safety
sick
sickness
street
travel
vaccine
virus
wearing
woman