英文關鍵字
long
panorama
tailings
dam
polluted
toxic
waste
air
pollution
background
business
cancer
canyon
chemicals
cliff
danger
dangerous
dig
dirt
dirtiness
disaster
dump
earth
ecology
environment
environmental
excavation
garbage
geology
global
hill
horizon
industrial
landscape
industry
lake
large
machinery
mine
mineral
mountain
nature
open
rock
salt
sand
smoke
stone
tail
tailing
trash
view
substances
winter
full