機器
arm
autumn
backhoe
bucket
civil engineering
construction
digger
digging
dirt
dredging
embankment
excavation
excavator
heavy
heavy machinery
hydraulic
hydraulic excavator
hyogo prefecture
industrial
industry
japan
landscape
machinery
muko river
operation
operator
park
pond
power
reflection
river
river conservation work
riverbank
riverbed
sand
scoop
shovel
site
soil
special vehicle
sunny
vehicle
water surface
wood
work
yellow