Young male chemist teacher in the lab
Palabras clave
academic,
book,
book,
chemical,
chemist,
chemistry,
class,
classroom,
college,
discovery,
discussing,
education,
experiment,
experimenting,
explaining,
flask,
fluid,
glasses,
glassware,
high,
laboratory,
laboratory,
learning,
lecture,
lecturer,
lesson,
liquid,
man,
presenting,
reading,
research,
researcher,
school,
science,
scientific,
scientist,
showing,
student,
study,
studying,
substance,
teacher,
teaching,
textbook,
textbook,
training,
tube,
tutor,
tutoring,
university
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