英文關鍵字
architecture
atmosphere
black
blue
burning
business
car
chimney
city
cloud
clouds
color
dusk
ecology
environment
environmental
exterior
factory
fog
fuel
fumes
funnel
heat
high
house
industrial
industry
landscape
nature
outdoor
plant
pollution
power
residential
silhouette
sky
smoke
square
stack
steam
street
structure
sun
sunset
technology
toxic
tube
urban
white
winter