機器
acoustic
adult
aid
amplifier
assistance
attention
audiology
care
caucasian
checkup
closeup
control
deaf
deafness
device
diagnosis
difficulty
disabled
disease
ear
equipment
female
fitting
hand
happy
hard
health
hear
hearing
help
home
illness
impairment
instrument
listen
loss
mature
medicine
middleaged
person
portrait
problem
receiver
smiling
sound
technology
tool
volume
woman