機器
activity
arm
backhoe
blue
bucket
bulldozer
business
car
construction
crane
dig
digger
engineering
equipment
excavation
excavator
fuel
ground
heavy
hydraulic
hydraulic power shovel
hydraulics
industrial
industry
isolated
loader
machinery
metal
mining
mover
oil
power
power shovel
road
scoop
shovel
shovel car
site
sky
soil
steel
tractor
transportation
truck
vehicle
work
yellow