機器
activity
architecture
big
blue
build
building
bulldozer
business
construction
digger
dredger
dust
duty
earth
equipment
estate
excavation
excavator
exterior
heavy
hydraulic
industry
job
land
loader
machinery
massive
mover
object
outdoor
perspective
power
realty
shovel
site
sky
structure
sun
sunlight
sunny
vehicle
work
yellow