african
african american
american
beaker
blue
caucasian
chemical
chemistry
child
class
classroom
concept
dark
discovery
education
female
friends
friendship
girl
gown
hairstyle
happy
intelligent
kid
lab
laboratory
learn
learning
liquid
mixed
multicultural
multiethnic
people
person
primary
race
research
researcher
room
school
scotland
skin
smile
student
study
teen
teenager
two
types
white
woman
定額
Two girl student friends with different types of skin together. Multi ethnic friend while learning and test science chemical with colorful liquid in beaker and test tube in laboratory at to school.の素材 [FY310174624820]
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