機器
action
activity
background
backhoe
blade
bucket
build
building
bulldozer
closeup
construction
dig
digger
digging
earth
equipment
excavate
excavation
excavator
heavy
hydraulic
industrial
industry
isolated
labor
loader
machinery
mining
mover
power
quarry
scoop
scraper
shovel
site
sky
small
soil
tool
tractor
transportation
unloading
vehicle
wheel
white
work
yellow