英文關鍵字
adult
air
allergy
bacteria
care
city
corona
coronavirus
covid19
crowd
disease
epidemic
face
female
health
illness
infection
mask
masks
medical
medicine
outbreak
outdoor
pandemic
park
person
pollution
portrait
prevention
protect
protection
protective
putting
quarantine
respiratory
safety
sick
sickness
side
street
travel
view
virus
wearing
woman
young