英文關鍵字
big
blasting
constructions
crushed
development
dirt
dump
dumper
earth
equipment
excavate
excavation
heavy
hopper
huge
industrial
industry
iron
landscape
large
limestone
machine
machinery
manufacture
metal
mine
mound
mountain
moving
open
opencast
ore
outdoor
pile
pit
production
quarry
raw
resource
rock
stone
surface
transport
transportation
truck
unload
vehicle
work
yellow