african
african american
asian
beaker
biology
boy
chemical
chemist
chemistry
child
children
class
classmate
classroom
cognition
curiosity
demonstration
desk
diversity
education
elementary
enjoy
ethnicity
examining
experiment
explaining
female
friends
girl
group
happiness
indoor
lab
laboratory
learning
liquid
people
person
pouring
pupil
school
science
scientist
student
studying
teacher
teaching
test
tube
woman
定額
Young teacher teaching group student about science and test chemical for liquid in the lab of school, children studying and learning experiment science in the laboratory, education concept.の素材 [FY310185057101]
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