英文關鍵字
bright
burn
burning
cloudy
complex
crude
energy
engineering
environment
equipment
factory
field
fire
flame
flammable
flare
fuel
fumes
gas
gasoline
grass
green
heat
industry
large
material
metal
natural
oil
perm
petroleum
physical
pipe
plant
pollution
power
production
pump
refinery
russia
smoke
substance
temperature
tool
tower
toxic
trees
village
weather
work