英文關鍵字
backpack
bag
boys
building
caucasian
child
childhood
children
class
education
elementary
friends
front
fun
group
happy
knowledge
learning
low
outdoors
part
people
person
primarypupil
school
schoolchildren
space
students
time
uniform
joy
schoolyard
completion
prank
gladness
schoolgirl
schoolboy
four
phone
smartphone
mobile
screen
interest
watch
together
discuss
gadget
technology