英文關鍵字
2019ncov
alert
attention
augmented
authentication
bacteria
business
careful
caution
cell
cloud
concept
coronavirus
covid19
crime
cyber
danger
dangerous
data
elapse
elapsed
end
epidemic
false
forward
fraud
hack
hand
hologram
hud
infection
information
internet
man
ncov
network
now
objective
online
pandemic
phone
scam
smartphone
smile
stop
technology
warning