英文關鍵字
adult
age
aged
anatomy
ancient
auld
background
below
calmly
caucasian
conjunctivitis
down
downward
dream
elder
elderly
eldest
eyelashes
eyes
granddad
grandfather
grandpa
graybeard
head
hold
home
human
indoors
iris
irises
isolated
lifestyle
looking
lower
male
medical
old
person
pink
pleased
pupil
pupils
science
sight
spectacles
vision
watching