英文關鍵字
action
big
blade
bucket
build
bulldozer
construct
construction
contractor
dig
digger
dirt
dredger
earth
earthmover
equipment
excavation
excavator
flatten
gravel
ground
heap
heavy
industrial
industry
loader
machine
machinery
move
mover
moving
operate
operation
operator
place
power
push
sand
scoop
scraper
shovel
site
soil
tractor
transport
vehicle
wheel
work
working
yellow