機器
activity
background
backhoe
bucket
build
building
bulldozer
construction
development
dig
digger
dirt
dirty
earth
equipment
excavate
excavating
excavation
excavator
ground
heavy
hydraulic
industrial
industry
large
loader
machinery
metal
mining
mover
outdoor
outdoors
power
quarry
road
rusty
sand
scoop
shovel
soil
steel
street
tractor
transportation
vehicle
work
yellow