機器
building
built
bullgrader
cargo
construction
digging
dirt
dredge
dredger
dredging
earth
excavator
heavy
hydraulics
industry
land
machinery
mini
minitractor
mode
mover
moving
outdoor
outdoors
place
power
rock
sand
shovel
site
small
steam
stone
technology
tractor
transport
transportation
vehicle
work
working