機器
activity
backhoe
big
bucket
build
building
bulldozer
construction
dig
digger
digging
dirt
earth
earthmover
engineering
equipment
excavate
excavation
excavator
ground
heavy
hydraulic
industrial
industry
isolated
large
loader
machinery
metal
mining
mover
outdoors
power
quarry
sand
scoop
shovel
site
sky
soil
tractor
transport
transportation
truck
vehicle
wheel
work
working
yellow