flood diversion and retention areas的用法和樣例：
例句
- Plans for flood-water storage and discharge areas on the lower-middle reaches of the Yangtze River will be readjusted.
調整長江中下游分蓄洪區規劃。 - The flood routing in the flood diversion area of Baitan Lake, in Hubei Province, is calculated by the developed plane 2-D water mathematical model for flood diversion area.
運用改進的分蓄洪區平面二維水流數學模型計算了湖北省白譚湖分蓄洪區洪水演進的情況。
