environmental
background
canal
chemical
clean
concrete
contamination
culvert
danger
dirt
dirty
disaster
discharge
drain
drainage
dump
ecology
environment
factory
flow
flowing
garbage
industrial
industry
liquid
metal
nature
old
outdoor
pipe
pipeline
plant
pollution
recycling
river
rust
sanitary
sea
sewage
sewer
stream
system
technology
toxic
treatment
tube
unhygienic
waste
wastewater
water
定額
Discharge of dirty industrial wastewater in sea on city beach. Poisoning of recreation areas by spread of diseases, destruction of flora and fauna as result of violation of the ecology of sea coastの素材 [FY310118761285]
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