機器
activity
background
bucket
build
building
bulldozer
construction
day
development
digger
dirt
earth
earthmoving
equipment
excavation
excavator
gravel
ground
heavy
horizontal
hydraulic
industrial
industry
loader
machinery
move
mover
outdoor
power
quarry
road
roadwork
sand
scoop
shovel
site
sky
soil
technology
tool
transportation
urban
vehicle
work