英文關鍵字
blade
building
bulldozer
busy
civil
close
construction
crawler
detail
diesel
down
duty
earth
earthmover
earthmoving
earthworks
end
engineering
flatting
footprint
front
heavy
hydraulic
imprint
industrial
industry
job
land
level
machine
machinery
mechanism
metal
mover
power
powerful
push
sand
site
soil
steel
terrain
trace
track
tracked
trail
tread
under
undercarriage
vehicle
wheel
work