英文關鍵字
answering
arm
asian
asking
boy
brain
caucasian
cheerful
child
childhood
class
classroom
desk
discussing
down
education
eight
elementary
fun
happy
head
indoors
interactive
learning
lesson
lock
male
massage
medium
mixed
old
people
person
primary
question
race
raised
school
schoolchildren
shot
sitting
standing
student
table
talking
teacher
teaching
together
uniform