英文關鍵字
2019ncov
air
allergic
allergy
breath
breathe
care
caucasian
clean
concept
corona
coronavirus
covid19
directly
disease
ecology
ended
epidemic
face
flu
freedom
fresh
happiness
happy
health
hygiene
illness
infection
infectious
joy
mask
medical
men
outdoor
pandemic
pneumonia
protect
protection
protective
quarantine
remove
respiratory
safety
smile
street
throws
virus