英文關鍵字
city
cityscape
factory
activity
air
area
blast
chimney
conservation
construction
cooling
damage
district
dlobal
ecology
emitting
energy
environment
environmental
equipment
evening
exhaust
gas
global
heat
industrial
industry
manufacturing
metal
mill
pollution
processes
production
refinery
sky
skyline
smoke
stack
steam
steel
storage
structure
sustainable
tank
technology
tube
vapor
warming
water