英文關鍵字
building
bush
chemical
cloud
cloudy
construction
crane
day
electricity
emit
energy
engineering
factory
field
fuel
gas
gasoline
generation
grass
green
illumination
industrial
industry
light
manufacturing
mineral
nobody
noone
oil
outdoor
phosphor
phosphorus
pipe
pipeline
plant
plants
production
recycling
resources
russia
sky
smog
smoke
steel
storage
technology
togliatti
tolyatti
tree
tube