impounding reservoir的用法和樣例：
例句
- It is not essential to build a storage or impounding reservoir if the water can be stored in the ground.
如果能將水儲存在地下，就沒有必要建造水庫或蓄水池。 - To begin to understand why, remember that water in a reservoir naturally flows preferentially to any crack in the dam.
要探究原因，可以聯想一下蓄水池的水，當水壩有裂縫時，水很自然的會先由裂縫流出。
