英文關鍵字
no
people
coronavirus
text
pack
message
board
sign
marker
writing
social
distancing
quarantine
self
isolation
distance
lockdown
coronaviridae
covid
19
covid19
dangerous
disease
spreading
virus
cell
epidemic
health
illness
human
infection
outbreak
science
idea
concept
digital
pandemic
scare
global
contagious
contagion
hazard
unhealthy
warning
biohazard
care
medicine
animation
montage
digitally
generated