reservoir formation

例句：

1. 1. The reservoir formation is a crucial part of the hydrological cycle.
   水库形成是水文循环的重要组成部分。
2. 2.The reservoir formation has been studied for decades to understand its impact on the environment.
   水库形成几十年来一直被研究，以了解其对环境的影响。
3. 3. The construction of the reservoir formation is expected to reduce flood risk in the region.
   预计水库形成建设将减少该地区的洪水风险。