flood control standard

例句：

1. 1. The cityhas set a flood control standard for theriver.
   该城市为河流设定了洪水控制标准。
2. 2. The new flood control standard isstricter than the old one.
   新的洪水控制标准比旧的更严格。
3. 3. Thecity's flood control standard is well-known in the region.
   该城市的洪水控制标准在该地区广为人知。