英文關鍵字
analysis
bottle
chemical
chemicals
chemistry
closeup
container
danger
dangerous
destroy
diethyl
ether
disease
environment
factory
fire
flammable
glass
hazard
hazardous
health
industrial
industry
infection
information
lab
label
laboratory
manufacturing
material
object
poison
product
protect
reaction
research
risk
safety
scar
science
scientific
substance
substances
symbol
tag
warn