英文關鍵字
smartphone
gadget
hand
line
symbol
gesture
zooming
swiping
press
holding
finger
screen
tapping
phone
linear
display
touch
video
cellphone
accelerometer
playing
game
app
carrying
camera
digital
image
user
flexible
tap
turning
button
zoomin
zoomout
icon
motion
graphic
animation
pictogram
hd
animated
item
sign
black