選択的
alcohol
analyzing
beaker
biochemist
biology
blue
boiling
bottle
burner
care
chemical
chemist
chemistry
class
clinic
closeup
cylinder
develop
development
discovery
equipment
experiment
flask
focus
fuel
glass
health
industry
instrument
lab
laboratory
lamp
lighting
liquid
medical
medicine
microbiology
nobody
oil
pharmaceutical
reactants
research
round
science
scientific
scientist
technician
technology
test
tube
water