英文關鍵字
2019ncov
adult
antibacterial
bacteria
bathroom
caucasian
clean
cleaning
clinic
coronavirus
covid
covid19
disease
epidemic
faucet
female
flu
foam
hand
hands
health
hospital
human
hygiene
infection
liquid
man
medical
outbreak
pandemic
person
personnel
prevention
preventive
protection
quarantine
safety
sanitary
sink
soap
soapy
splashing
stream
virus
wash
washing
water
wet