英文關鍵字
adult
attitude
background
beat
behavior
caucasian
cheerful
cheering
close
communication
concept
enjoyment
entertainment
expressing
finger
fingers
fun
gesture
gestures
gesturing
hand
hands
happiness
happy
isolated
joy
male
man
middle
person
playful
positive
positivity
rhythm
sign
signal
signs
simplicity
snap
snapping
symbol
symbols
thumb
white