river channel straightening

例句：

1. 1. The river channel straightening project aims to reduce flood risks in the area.
   河流通道平直化项目旨在减少该地区的洪水风险。
2. 2.The river channel straightening measures have been implemented to improve navigation safety.
   实施了河流通道平直化措施，以提高航行安全。
3. 3.The river channel straightening project has had a significant impact on the local economy.
   河流通道平直化项目对当地经济产生了显著影响。