英文關鍵字
1080p
30s
4k
adult
boy
caucasian
child
childhood
class
classroom
cute
definition
development
early
education
elementary
female
girl
group
hd
high
highdef
hispanic
learn
learning
male
medium
mid
mixedrace
of
people
pres
pupil
school
woman
英文關鍵字
1080p
30s
4k
adult
boy
caucasian
child
childhood
class
classroom
cute
definition
development
early
education
elementary
female
girl
group
hd
high
highdef
hispanic
learn
learning
male
medium
mid
mixedrace
of
people
pres
pupil
school
woman