英文關鍵字
adult
arm
back
background
caucasian
chroma
click
closeup
communicating
concept
count
finger
fingers
first
fist
gesture
gesturing
hand
human
index
isolated
key
looking
male
man
mans
nine
number
one
palm
peace
people
persevering
person
provocative
school
sign
signal
spreading
stop
students
symbol
take
thinking
thumb
waiting
white
wining
wrist
young