large city drain drains sewage into canal that flows the river ecological problem

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A large city drain drains sewage into a canal that flows into the river. Ecological problem. Royalty Free Stock Photo
A large city drain drains sewage into a canal that flows into the river. Ecological problem. The concept of environmental Royalty Free Stock Photo
A large city drain drains sewage into a canal that flows into the river. Ecological problem. The concept of environmental Royalty Free Stock Photo
A large city drain drains sewage into a canal that flows into the river. Ecological problem. The concept of environmental Royalty Free Stock Photo
   
   
   
A large city drain drains sewage into a canal that flows into the river. Ecological problem.
   
   
   
   
   
   
   
A large city drain drains sewage into a canal that flows into the river. Ecological problem. The concept of environmental protection and ecology. Concrete structure

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