機器
brown
bucket
bulldozer
construction
dirt
drill
earth
equipment
escavate
escavation
escavator
excavate
excavation
excavator
heavy
hydraulic
industry
isolated
land
light
machinery
mining
mover
mulch
pond
rock
sand
shadow
shovel
silhouette
soil
sunlight
track
tractor
vehicle
white
working
works
yellow