英文關鍵字
aerial
atmosphere
background
black
blue
burning
business
car
chimney
city
cityscape
cloud
clouds
color
contemporary
day
district
dusk
ecology
environment
environmental
exterior
factory
fog
fuel
fumes
funnel
heat
high
industrial
morning
nature
pipe
plant
pollution
power
russia
silhouette
sky
smog
smoke
steam
structure
sun
technology
tower
travel
tube
urban
winter