英文關鍵字
pour
gravel
excavator
bucket
crushing
tower
mining
quarry
closeup
equipment
pit
rock
construction
material
industry
plant
work
manufacture
production
resource
chimney
large
pile
cloudy
sky
process
storage
structure
aggregate
basalt
sedimentary
crusher
development
heavy
tank
industrial
territory
landscape
building
stone
extraction
technology
ore
dig