英文關鍵字
20s
african
american
black
boy
caucasian
child
children
class
classroom
computer
desk
dolly
education
elementary
ethnic
female
file
folder
girl
group
happy
laptop
learning
male
man
medium
men
mixed
multi
occupation
people
primary
professional
pupil
race
school
shot
sitting
six
smiling
student
studying
teacher
teaching
together
twenties
working
writing
years