two students performing an experiment
Palabras clave
student,
laboratory,
pointing,
showing,
test,
scientist,
liquid,
photo,
studying,
chemistry,
holder,
instructing,
standing,
testing,
school,
intelligence,
chemical,
laboratory,
uniform,
learning,
education,
cognition,
tube,
experiment,
2,
adult,
class,
young,
indoor,
photograph,
college,
protective,
performing,
horizontal,
instructor,
science,
man,
clothing,
unrecognizable,
people
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