英文關鍵字
adult
american
attentive
beware
boy
boys
caucasian
child
childhood
children
class
classroom
computer
concentrated
cute
educate
education
elementary
family
female
girl
girls
group
happy
indoors
internet
kid
kids
knowledge
laptop
learn
learning
lesson
looking
male
people
person
primary
pupil
school
student
teacher
teaching
technology
together
woman
young