overfalling weir

例句：

1. 1. The overfalling weir caused a flood in the nearby town.
   崩塌的堤坝导致附近城镇发生洪水。
2. 2.The engineers were tasked with repairing the overfalling weir.
   工程师们被指派修复崩塌的堤坝。
3. 3.The overfalling weir was amajor concern for the local authorities.
   崩塌的堤坝是当地当局的一个主要担忧。