名词
中文翻译：鸭草
同义词：
['duckweed', 'duckweeds']
例句：
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1.The duckweed was so dense that it blocked the sunlight from reaching the water.
鸭草如此密集，以至于阻挡了阳光到达水面。
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2. The farmers were trying to control the spread of duckweed in their ponds.
农民们试图控制池塘中鸭草的传播。
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3. The duckweed had grown so thick that it was affecting the aquatic life in the pond.
鸭草长得如此茂盛，以至于影响了池塘中的水生生物。