機器
activity
background
backhoe
big
black
blue
brown
bucket
build
bulldozer
compactor
construction
development
dig
digger
digging
dirt
earth
earthmover
engineering
equipment
excavate
excavation
excavator
ground
heavy
hole
hydraulic
industrial
industry
lifter
loader
mine
mining
mover
outdoors
power
shovel
site
soil
tractor
trucks
up
urban
vehicle
white
work
workers
zone