城市用水应抓好工业节约用水，提高水的重复利用率，减少污水排放量。
In cities, we must pay close attention to saving water for industry, improving the rate of reused water and decreasing the drainage of polluted water.
生活废水跨层再利用是提高生活用水效率与减少污水排放量的有效节水措施。
Inter-floor reuse of domestic wastewater is an effective measure to improve the efficiency using of water and reduce sewerage drainage.
中水回用既可减少废污水排放量，又能缓解水资源短缺的矛盾。
The reclaimed-water utilization can reduce the quantity of discarded water and alleviate the contradiction of water shortage.
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