英文關鍵字
no
people
face
mask
protection
3d
human
model
flag
us
america
american
national
social
distancing
message
hazard
tape
quarantine
self
isolation
distance
lockdown
coronavirus
coronaviridae
covid
19
covid19
dangerous
disease
spreading
virus
cell
epidemic
health
illness
infection
outbreak
science
idea
concept
digital
pandemic
scare
contagious
contagion
warning
care
medicine
animation
montage
digitally
generated