機器
activity
architecture
backhoe
bucket
build
building
bulldozer
business
construction
digger
dirt
dredger
dump
dust
duty
earth
equipment
estate
excavate
excavation
excavator
exterior
hydraulic
industry
job
loader
machinery
massive
material
mover
object
outdoor
perspective
power
real
realty
road
rock
sand
shovel
site
sky
structure
sun
sunlight
sunny
transport
truck
vehicle
work