機器
big
blue
bucket
build
building
bulldozer
cloud
construction
contractor
development
dig
digger
digging
dirty
dredge
duty
earth
earthmover
equipment
excavate
excavation
excavator
grader
ground
heavy
hoe
hydraulic
industrial
industry
iron
job
landscape
large
loader
machinery
mover
nobody
power
scoop
shovel
site
sky
soil
tool
tractor
transport
vehicle
work
yellow