英文關鍵字
adult
age
aged
aging
aid
background
bright
caucasian
close
closeup
communication
deaf
deafness
difficult
difficulty
disability
ear
elder
elderly
grandfather
health
hear
hearing
human
illness
impairment
listen
listening
loss
loud
male
man
mature
medical
medicine
noise
old
older
orange
pension
pensioner
person
problem
retired
retirement
senior
sound
trouble
up