英文關鍵字
mask
face
man
window
facemask
hand
old
senior
medical
elderly
social
wave
distance
covid
gesture
room
indoor
home
lonely
coronavirus
lockdown
alone
older
quarantine
corona
male
mature
person
people
citizen
aged
adult
retired
protective
year
illness
stay
sick
safety
healthcare
care
open
curtain
goodbye
welcome
glasses
solitude
distancing