cascaded

例句：

1. 1.The waterfall cascades down the mountainside.
   瀑布沿着山腰往下流。
2. 2.The river cascades over the rocks in a gentle flow.
   河水在岩石上缓缓流淌。
3. 3.The cascade of leaves is beautiful to watch.
   树叶的层层叠落很美丽。