英文關鍵字
amusement
black
boy
class
communicate
communication
copybook
device
electronic
entertainment
fingers
flipping
gadget
game
hands
holding
indoor
knowledge
learner
lecture
lesson
lifestyle
looking
notebook
person
play
playing
pupil
recreation
relaxation
rest
scroll
scrolling
sitting
smart
student
students
tablet
task
teen
teenager
touch
touching
using
white
writing