機器
area
backhoe
bucket loader
bulldozer
car
caterpillar tracks
clay
clear day
construction
construction site
dig
empty rocks
engine
equipment
excavate
excavation
excavations
excavator
ground
heavy
industrial
industry
loader
machinery
mine
no one
no people
opencut
ore
outside
pile
pile of dirt
quarry
railroad
road
rock
sand
site
soil
stone
street
terminal
track
tractor
transport
transportation
truck
unearthing
work