boys
chemical
chemist
chemistry
childhood
children
class
classroom
curriculum
development
discovery
education
educational
equipment
excited
experimenting
flasks
glassware
indoors
instruction
interest
kids
knowledge
lab
laboratory
learning
liquids
nervous
project
pupils
research
scared
scholar
school
schoolboy
schoolchild
science
scientific
scientist
set
students
study
studying
system
teacher
teamwork
testing
training
tutor
定額
It may work out, it may not. Extremely scared female tutor holding a filter flask while her excited teenage students mixing multi colored chemical liquids together during a chemistry lesson.の素材 [FY31093513489]
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