機器
activity
blade
borrow
bucket
building
bulldozer
construction
cut
development
dig
digger
earth
engineering
equipment
excavate
excavating
excavation
excavator
ground
heavy
horizontal
illustration
industrial
industry
isolated
large
load
loader
machinery
mine
motor
mover
pit
power
powerful
sand
sandpit
scoop
shovel
silhouette
site
sky
soil
track
tractor
vehicle
work