英文關鍵字
advertisement
arm
background
business
caucasian
chromakey
click
closeup
communication
contraption
cutout
cyberspace
demonstrate
device
display
finger
fingers
gesture
green
hairy
hand
indexed
isolated
male
man
mans
mobile
page
phone
point
pointing
screen
scroll
showing
signs
smartphone
squeezes
strong
swipe
tap
technology
touch
turning
two
video
while
white
wrist
zoom