機器
big
blue
bucket
bulldozer
construction
consturction
cut
develop
dig
digger
dirt
earth
eathmoving
equipment
excavation
excavator
ground
heap
heavy
hydraulic
industrial
industry
large
loader
machinery
metal
mine
mover
moving
orange
outdoors
power
quarry
river
road
rock
sand
scoop
shovel
site
sky
snowplow
soil
stone
technology
tractor
vehicle
work
yellow