水环境资源是人类赖以生存的资源。城市污水治理工程是水环境的重要基础设施工作。
Water is one of the essential resources for human beings, and urban sewage treatment forms a key part of the infrastructure works.
水环境资源是人类赖以生存的资源。城市污水治理工程是水环境的重要基础设施工作。
Water is one of the essential resources for human beings, and urban sewage treatment forms a key part of the infrastructure works.
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