cascade hydropower stations

例句：

1. 1.The cascade of water from the mountain flows down into the valley.
   从山上流下的瀑布流入山谷。
2. 2.The cascade of leaves on the trees creates a beautiful natural scene.
   树上的落叶形成一幅美丽的自然景象。
3. 3. The cascade of power generated by the hydroelectric station powers the surrounding area.
   水电站产生的电力为周围地区提供动力。