名词
中文翻译：瀑布
同义词：
['fall', 'stream', 'descend']
例句：
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1.The cascade of leaves is a beautiful sight in autumn.
秋天，落叶的瀑布是一幅美丽的景色。
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2. The river cascades over the rocks and creates a soothing sound.
河流从岩石上流下，发出宁静的声音。
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3. The cascade of memories from childhood floods back into her mind.
童年的记忆如瀑布般涌回她的脑海。