英文關鍵字
2019ncov
background
bacteria
beard
care
contagious
corona
coronavirus
covid19
danger
disease
epidemic
face
flu
gauze
health
hospital
hygienic
illness
infect
infection
influenza
male
man
mask
medical
medicine
pandemic
patient
people
person
pneumonia
pollution
portrait
prevention
protect
protection
protective
puts
quarantine
respiratory
sick
surgical
treatment
viral
virus
wearing
young