当前我国用水面临水资源短缺和水环境恶化的双重考验，污水资源化是解决水资源短缺和水环境恶化的有效途径。
Water deficiency and environmental pollution are two problems we confront with in water usage. Wastewater reclamation is greatly effective to solve these problems.
当前我国用水面临水资源短缺和水环境恶化的双重考验，污水资源化是解决水资源短缺和水环境恶化的有效途径。
Water deficiency and environmental pollution are two problems we confront with in water usage. Wastewater reclamation is greatly effective to solve these problems.
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