機器
activity
background
backhoe
bucket
build
building
bulldozer
construction
development
dig
digger
digging
dirt
earth
earthmover
earthmoving
earthwork
engineering
equipment
excavation
excavator
ground
heavy
hydraulic
industrial
industry
loader
loading
machinery
mover
moving
power
quarry
road
roadwork
sand
sandpit
scoop
shovel
site
soil
technology
tractor
truck
vehicle
work
yellow