英文關鍵字
against
agriculture
air
architecture
blue
building
chemical
city
climate
country
countryside
dirty
ecology
energy
environment
environmental
factory
farm
field
gas
global
house
industrial
industry
landscape
nature
outdoors
pipe
plant
pollution
rainbow
refinery
rural
season
sky
skyline
smoke
stack
station
steam
storm
summer
technology
the
tree
view
village
white