機器
activity
blue
bucket
building
bulldozer
construction
development
dig
digger
dirt
earth
earthwork
engineering
equipment
excavate
excavating
excavation
excavator
ground
heavy
hydraulic
industrial
industry
loader
machinery
mine
mover
moving
outdoors
power
process
project
quarry
road
sand
scoop
shovel
site
sky
soil
structure
vehicle
work
working
workplace
yellow