英文關鍵字
american
attractive
beautiful
boy
brother
chemistry
child
childhood
children
class
cute
development
education
elementary
emotion
european
exams
experiment
expression
face
finger
friends
friendship
fun
funny
future
girl
grade
hand
happiness
kid
knowledge
learning
lesson
looking
people
person
posing
pupil
school
science
student
studying
teaching
test
together
two
young