hydromelioration

例句：

1. 1. The hydromelioration of the river has greatly improved the quality of life in the area.
   河流的水力改良极大地改善了该地区的生活质量。
2. 2.The engineers are working on a hydromelioration project to improve water quality.
   工程师们正在致力于一个水力改良项目，以改善水质。
3. 3. The company is committed to hydromelioration techniques to reduce pollution in the industrial zone.
   该公司致力于水力改良技术，以减少工业区污染。