英文關鍵字
2019
adult
aged
allergic
care
caucasian
citizen
closeup
corona
coronavirus
covid
danger
disease
elderly
epidemic
european
eye
face
father
grandfather
gray
hair
health
healthcare
infect
man
mask
medical
ncov
old
pain
pandemic
patient
people
portrait
prevention
proof
protection
protective
quarantine
senior
virus