academic
book
books
chemical
chemist
chemistry
class
classroom
college
desk
discussing
education
exams
exhausted
explaining
fatigue
headache
high
lab
laboratory
learn
learning
lecture
lecturer
lesson
man
mentor
mentoring
reading
research
researcher
revising
school
science
scientific
scientist
sleeping
sleepy
student
study
studying
teacher
teaching
textbook
textbooks
tired
training
tutor
tutoring
university
定額
Chemistry lecturer during lecture in collegeの素材 [FY310134374742]
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