英文關鍵字
acid
background
beaker
biology
chemical
chemist
chemistry
color
dangerous
dyes
eruption
ferments
flaccid
flask
fracture
fume
funnel
geological
geology
hydrogen
laboratory
medicine
microbiology
microscope
mixer
natural
research
science
smell
stone
sulfur
sulfurous
sulphur
toxic
travel
view
volcanic
volcano
water
white
yellow