英文關鍵字
adult
age
aged
alertness
background
casual
caucasian
close
closeup
communication
concept
confident
deafness
elderly
expression
finger
fun
gesture
gesturing
gossip
gossips
hand
male
man
mature
mute
old
one
orange
pensioner
private
quiet
retired
retirement
secrecy
secret
senior
shh
showing
shut
sign
silence
silent
smile
smiling
speechless
surprise
symbol
up