機器
activity
backhoe
bucket
building
bulldozer
cloudy
construction
contemporary
day
development
dig
digger
dirt
earthmover
equipment
excavation
excavator
gloomy
gravel
heavy
hill
hydraulic
industrial
industry
large
loader
machinery
mover
sand
scoop
shovel
site
sky
small
soil
stand
structure
tractor
transportation
vehicle
work
yellow