英文關鍵字
protection
epidemic
disease
mask
illness
people
virus
protective
medical
person
indoors
hazard
safety
hazmat
gloves
sickness
infection
danger
inside
building
plague
precaution
bug
infestation
goggles
viral
suit
contagion
clothing
health
shocked
stunned
worried
doctor
laboratory
medicine
scientist
flu
covid19
influenza
pandemic
prevention
woman
city
wearing