英文關鍵字
coal
mine
terraced
layers
water
basin
bottom
cloudy
sky
mining
excavation
industrial
large
massive
terrain
geology
earth
environment
quarry
landscape
industry
natural
resources
extraction
engineering
infrastructure
outdoor
site
pit
economic
mineral
rock
digging
operation
surface
ground
hole
slope
earthwork
road
grand
lake
ai
generated