英文關鍵字
adult
air
allergy
bacteria
beautiful
blue
care
caucasian
corona
coronavirus
covid
danger
disease
epidemic
face
female
flu
girl
health
hospital
ill
illness
infection
infectious
influenza
mask
medical
medicine
pandemic
patient
people
person
pneumonia
pollution
portrait
prevention
problem
protect
protection
protective
respiratory
safety
sick
sickness
virus
wearing
white
woman
young