the work of leveling protective embankments and discharging floodwater to restore farmland reclaimed from lakes back to the original state and resettling the displaced persons in newly built towns
平整防护堤防，放水，恢复堰塞湖农田原状，安置新建城镇的流离失所者
以上为机器翻译结果，长、整句建议使用 人工翻译 。