branch dike

例句：

1. 1. The engineers were busy constructing a new branch dike to prevent floods.
   工程师们忙于建造一座新的分水堤以预防洪水。
2. 2. The construction of the branch dike has been completed successfully.
   分水堤的建设已经成功完成。
3. 3.The branch dike is an essential part of the flood control system.
   分水堤是防洪系统的重要组成部分。