“Polypodiophyta”的概念、定义、翻译、参考文献-科学参考

单词	Polypodiophyta
释义	Polypodiophyta [´päl·i´päd·ē`äf·ǝd·ē] ^BOTANY The ferns, a division of the plant kingdom having well-developed roots, stems, and leaves that contain xylem and phloem and show well-developed alternation of generations.
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