機器
activity
barge
boat
bottom
bucket
canal
channel
city
clean
cleaning
construction
crane
day
digger
digging
dredge
dredger
dredging
engineering
environment
equipment
excavation
excavator
heavy
industrial
industry
loading
machinery
metal
mover
mud
nature
nautical
port
power
river
sand
scoop
ship
shovel
silt
technology
transportation
vessel
water
work
定額
Cleaning the newly formed island from industrial waste on the Dnieper River by a dredger. Environmental problems of modern rivers. Ecology concept.の素材 [FY310184103387]
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![Tugboat and a barge or flat bottomed vessel parking at the sea side ready for load.の素材 [FY310196970260]](https://images.assetsdelivery.com/compings_v2/riocool/riocool2301/riocool230100115.jpg "Tugboat and a barge or flat bottomed vessel parking at the sea side ready for load.の素材 [FY310196970260]")