機器
architecture
arm
autumn
backhoe
blue
bridge
bucket
civil engineering
construction
construction machinery
construction site
digger
digging
dredging
embankment
excavator
heavy
heavy machinery
hydraulic
hydraulic excavator
hyogo prefecture
industry
japan
landscape
machinery
muko river
nature
operation
park
river
river conservation work
riverbank
riverbed
road
sand
scoop
shovel
sky
soil
special vehicle
sunny
vehicle
water
water surface
winter
work
yellow