英文關鍵字
bag
beautiful
bench
benches
board
boy
boys
caucasian
chat
childhood
children
classmates
corridor
education
elementary
female
friends
friendship
fun
girls
grade
greeting
hall
indoor
joy
kids
laugh
male
people
person
preadolescence
primary
pupil
pupils
rest
school
schoolchildren
schoolgirl
schoolgirls
schooling
sitting
slate
stack
student
study
studying
together