名词
中文翻译：裸子植物
同义词：
['gymnosperm', 'gymnospermous']
例句：
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1.Cycads are a type of cycad plant that has been around for millions of years.
裸子植物是一种已经存在了数百万年的植物。
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2. The fossil record from the Permian period shows that gymnosperms were widespread in the Earth's history.
二叠纪时期的化石记录显示，裸子植物在地球历史上曾经广泛分布。
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3. The discovery of new species of gymnosperms has led to further research into their evolution and adaptation.
新种裸子植物的发现促使人们进一步研究它们的进化和适应。