英文關鍵字
attack
bacterium
breakout
cell
coronavirus
covid
disease
dispenser
epidemic
hand
illness
infection
infectious
microbe
pandemic
prevention
quarantine
sanitizer
sickness
soap
spread
virus
washing
英文關鍵字
attack
bacterium
breakout
cell
coronavirus
covid
disease
dispenser
epidemic
hand
illness
infection
infectious
microbe
pandemic
prevention
quarantine
sanitizer
sickness
soap
spread
virus
washing