機器
big
blue
build
builder
bulldozer
cloud
construct
construction
contractor
dig
dirt
dredge
earth
earthmover
equipment
excavator
flatten
heap
heavy
industry
job
labor
machinery
move
operate
operator
place
push
roadman
rock
sand
scoop
shovel
site
soil
stones
track
tractor
transport
vehicle
wheel
work
worker
yellow