英文關鍵字
background
backpacks
bags
boy
brother
caucasian
cheerful
childhood
children
classmates
couple
cute
education
enjoy
excited
family
friends
friendship
fun
girl
hands
happy
holding
human
leisure
love
outdoors
outside
park
people
person
primary
pupils
school
schoolboy
schoolchild
schoolchildren
sister
smile
students
teen
teenage
together
two
walk
white
young
youth