african
asian
beaker
biology
black
boy
chemistry
class
classroom
concept
education
experiment
glasses
gown
high
indoors
junior
kid
lab
laboratory
learning
lesson
liquid
male
man
microscope
mixed
people
professor
race
research
room
school
science
student
teacher
technology
teen
teenage
teenager
test
tube
tutor
uniform
white
定額
African black boy student and asian male professor in white gown is learning and test science chemical with colorful liquid in beaker in lab room at to school. Education and science research concept.の素材 [FY310173032050]
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