機器
action
activity
background
blue
break
bucket
bulldozer
clouds
colorful
construction
crawler
dig
digger
drum
dump
earth
earthwork
equipment
excavation
excavator
gravel
ground
heavy
hydraulic
industrial
industry
loader
machinery
mine
no people
nobody
orange
outdoors
power
quarry
roller
sand
sandpit
scenic
scoop
shovel
site
sky
soil
tractor
truck
vehicle
work
yellow