英文關鍵字
allergy
autumn
bacteria
corona
coronavirus
disease
dust
epidemic
fear
female
fever
flu
gas
grief
headshot
health
healthcare
horizontal
human
ill
illness
infected
infection
influenza
mask
medical
medicine
outbreak
outdoor
pandemic
people
pollution
prevention
problems
protect
protection
protective
quarantine
respiratory
risk
sadness
safety
security
separation
sick
sickness
smog
spreading
spring
summer
symptom
virus
wear
wearing