機器
activity
backhoe
blade
bucket
building
bulldozer
construction
development
dig
earth
earthmover
equipment
excavate
excavation
excavator
gravel
ground
heavy
hydraulic
industrial
industry
large
loader
machinery
mine
mineral
mover
outdoors
pit
power
quarry
rock
sand
sandpit
scoop
shovel
shoveling
site
sky
soil
stone
tractor
truck
vehicle
work
yellow