英文關鍵字
kid
boy
smartphone
green
screen
choma
key
two
girl
tablet
play
game
app
use
tracking
point
keyer
technology
lifestyle
touching
monitor
display
mobile
finger
hands
empty
hold
tap
chromakey
chroma
touch
closeup
phone
person
watching
smart
holding
communication
device
gadget
information
internet
online
using
content
copyspace