英文關鍵字
back
beautiful
black
blackboard
board
caucasian
chalk
chalkboard
child
class
classroom
college
color
desk
digit
drawing
education
elementary
examples
female
figure
girl
grade
green
kid
learn
lifestyle
little
math
number
people
person
pupil
school
schoolchild
schoolgirl
simple
solve
student
teacher
teen
two
woman
write
young
youth