英文關鍵字
air
atmospheric
black
blue
central
chimney
city
coal
crock
disaster
dust
ecology
electricity
emission
energy
environment
environmental
factory
filter
fume
gas
green
heat
house
illness
industry
lung
mask
mosenergo
moscow
ozone
pipe
plant
pollution
power
problem
respire
sickness
sky
smoke
soot
stack
station
steam
technology
thermal
tower
warming
white
wide