英文關鍵字
no
people
text
covid19
coronavirus
flag
us
stars
and
stripes
star
spangled
banner
america
american
map
world
crisis
cases
change
increasing
social
distancing
quarantine
self
isolation
lockdown
coronaviridae
covid
19
dangerous
disease
spreading
virus
epidemic
health
illness
human
infection
outbreak
science
idea
concept
digital
pandemic
scare
global
contagious
contagion
hazard
care
medicine
animation
montage
digitally
generated