浜辺
background
blue
canal
coast
construction
damage
danger
dirty
disaster
discharge
drain
drainage
dump
ecology
environment
environmental
factory
flow
flowing
garbage
global
industrial
industry
lake
nature
ocean
oil
outdoor
outdoors
pipe
pipeline
plastic
pollute
polluted
pollution
protection
river
sea
sewage
sewer
sewerage
shore
stream
system
toxic
trash
tube
waste
water