英文關鍵字
covid19
passport
status
vaccination
digital
smartphone
virus
test
business
online
background
cellphone
vertical
disease
document
qr
object
antibody
safety
mobile
control
app
diagnostic
health
screen
concept
security
technology
infection
certificate
corona
pandemic
medicine
coronavirus
epidemic
display
protection
id
indoor
web
immunization
internet
antivirus
prevention
care
medical