英文關鍵字
book
boy
caucasian
child
childhood
class
cognition
computer
concentration
cute
desk
distance
distant
education
elementary
epidemic
floor
headphones
home
homework
information
internet
kid
learning
lesson
lifestyle
listen
little
male
modern
notebook
online
pandemic
portrait
preteen
pupil
quarantine
school
schoolboy
serious
smart
studying
tablet
technology
watch
wireless
writing
young
youth