英文關鍵字
background
behaviour
boy
caucasian
child
children
class
classes
classmate
closeup
device
different
diligent
education
elementary
game
girl
inattentive
internet
kid
learner
lesson
lifestyle
male
mobile
naughty
people
phone
play
playing
ponytail
portrait
pupil
school
schoolboy
schoolgirl
schoolmate
shocked
sitting
smartphone
social
student
surf
table
technology
telephone
two
writing