機器
activity
background
backhoe
blue
bucket
bulldozer
construction
development
dig
digger
dirt
earth
equipment
excavate
excavating
excavation
excavator
field
ground
heavy
hill
hollow
hydraulic
industrial
industry
large
loader
machinery
metal
mine
mining
mountain
mover
one
orange
outdoors
power
quarry
red
sand
scoop
shovel
site
sky
soil
tractor
vehicle
work
yellow