英文關鍵字
activity
backpack
boy
boys
break
child
childhood
classmate
concentration
cute
education
elementary
excitement
female
friends
girl
grade
grass
ground
happiness
kid
leisure
lifestyle
little
looking
male
outdoor
park
playing
primary
pupil
pupils
school
schoolboy
schoolchild
schoolchildren
schoolgirl
schoolkid
student
studying
summer
sunny
sunset
young