英文關鍵字
air
allergy
background
breathes
breathing
city
cleanliness
completion
concept
coronavirus
covid
crowd
development
doctor
end
environment
face
fearlessness
focus
fool
free
freedom
fresh
guy
happy
health
infection
italy
man
mask
medical
medicine
off
outdoor
over
pandemic
passer
portrait
quarantine
removes
safe
satisfaction
satisfied
scientist
selective
smiling
student
taking
vaccine
victory
violation