機器
area
backhoe
bucket
building site
cat
civil engineering
concept
construction
container
contractor
county
crowd
digger
engine
environment
equipment
excavator
fence
ground
group
hydraulic
industrial
industry
lined
lined up
loader
machinery
many
mechanization
metal
outdoor
parked
protection
protective
safety
scene
security
site
space
steel
stop
sunny
team
through
tractor
vehicle
view
wire
work