concrete overflow dam

例句：

1. 1. The concrete overflow dam was constructed to control floods during heavy rainfall.
   混凝土溢洪道被建造来在大雨期间控制洪水。
2. 2. The construction of the concrete overflow dam has been a major project for years.
   混凝土溢洪道的建设是多年来的主要项目。
3. 3. The concrete overflow dam is designed to divert water from the river to the sea.
   混凝土溢洪道的设计是将河水从河流引导到大海。