mortarless stone check dam

例句：

1. 1.The engineer designed a mortarlessstone check dam to control the flowof water during flood season.
   工程师设计了一个无砂浆石坝来控制洪水季节的水流量。
2. 2. The construction of this dam isan important step in the development of ourcountry's hydropower industry.
   建造这座大坝是我国水力发电业发展的重要步骤。
3. 3. Due to its durability and efficiency,mortarless stone check dams are widely used in various water conservancy projects.
   由于其耐用性和效率，无砂浆石坝在各种水利项目中被广泛使用。