英文關鍵字
2019ncov
burn
burning
concept
conceptual
corona
coronavirus
covid19
creative
danger
disease
distance
distancing
epidemic
fire
flu
group
health
healthcare
illness
infected
infection
influenza
isolated
isolation
lockdown
match
matchstick
matchsticks
metaphor
outbreak
pandemic
pneumonia
prevention
preventive
protect
protection
quarantine
risk
safety
separation
social
society
spread
spreading
stick
stop
virus
warning