機器
backhoe
big
bucket
build
building
bulldozer
caterpillar
construction
contractor
development
dig
digger
dirt
duty
earth
earthmover
earthwork
equipment
excavation
excavator
gravel
ground
heavy
hydraulic
industrial
industry
job
labor
large
machinery
modern
mover
occupation
outdoor
outside
sand
scoop
shovel
site
soil
technology
tool
tractor
transport
truck
vehicle
work
workplace
yellow