名词
中文翻译：蕨类植物
同义词：
['fern', 'fernleaf', 'fernroot', 'fernstem']
例句：
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1. The forest was covered in a thick carpet of ferns.
森林里覆盖着厚厚的一层蕨类植物。
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2. Ferns are an important source of food for many animals.
蕨类植物是许多动物的重要食物来源。
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3. The ferns were so tall that they almost touched the sky.
蕨类植物长得非常高，几乎碰到了天空。