waterway contraction works

例句：

1. 1.The waterway contraction works are essential for the maintenance of the river's health.
   水路收缩工程对河流健康维护至关重要。
2. 2.The construction of the waterway contraction works has been a long-term project.
   水路收缩工程的建设是一个长期项目。
3. 3.The waterway contraction works have significantly improved the efficiency of the river transportation system.
   水路收缩工程大大提高了河流运输系统的效率。