英文關鍵字
android
app
application
background
brows
cell
cellphone
chroma
closeup
communication
computer
content
device
digital
display
electronic
fingers
gadget
graphics
green
greenscreen
hand
hands
hold
holding
internet
iphone
keyed
male
man
mobile
modern
person
phone
prekeyed
screen
scrolling
smart
smartphone
technology
touch
touchscreen
typing
using
vertical