英文關鍵字
one
person
child
girl
female
mixedrace
people
animation
cloud
smiling
biracial
schoolgirl
holding
recycling
box
ecology
class
resource
school
childhood
education
learning
digitally
generated
video
student
study
classroom
knowledge
studying
lesson
digital
montage
learn
teacher
elementary
recycle
book
kid
environmental
happy