cascade effect

例句：

1. 1. The cascade of leaves creates a beautiful natural scene.
   树叶的连续流动创造了美丽的自然场景。
2. 2. The cascade of water from the mountain is breathtaking.
   从山上流下的水是令人惊叹的。
3. 3. The cascade effect is responsible for the rapid flow of water in streams and rivers.
   级联效应是河流和溪流中水流迅速的原因。