選択的
analysis
analyzing
asian
chemist
chemistry
children
container
cutout
discover
discovery
education
experiment
female
fluid
focus
foreground
girls
goggles
happy
holding
isolated
lab
laboratory
lifestyle
liquid
making
microbiology
people
person
posing
protective
pupils
red
research
researcher
researching
retort
science
showing
smiling
substance
test
testing
testtube
tube
tubing
uniform
vietnamese
young