long-crested weir

例句：

1. 1.The long-crested weir is a critical part of the flood control system.
   长喙堤坝是防洪系统的关键部分。
2. 2. The engineers carefully designed the long-crested weir to ensure efficient water flow.
   工程师们仔细设计了长喙堤坝，以确保水流的高效。
3. 3.The long-crested weir was constructed in response to the recent flooding event.
   长喙堤坝是在最近的洪水事件后建造的。