英文關鍵字
one
person
child
boy
male
mixedrace
people
animation
rotating
globe
happy
biracial
schoolboy
holding
recycling
crate
classroom
global
ecology
school
education
childhood
learning
digitally
generated
video
earth
kid
planet
montage
world
class
student
little
lesson
map
recycle
studying
knowledge
study
elementary
environmental
teacher