英文關鍵字
accident
acid
adult
alcohol
burn
care
chemical
chemicals
chemistry
clean
closeup
compress
corrosive
danger
dangerous
death
destroy
disease
domestic
environment
factory
fish
flammable
glass
green
health
heat
industry
infected
infection
information
ingredient
isopropyl
laboratory
leak
leaking
methyl
natural
nature
product
reaction
risk
safety
scar
science
skin
symbol
test
treatment
water