Ferns were the first terricolous vascular plants, and still comprise an important part of primary productivity of ecosystems.
蕨类植物是最早登陆
维管植物，至今仍然是生态系统初级生产
要
成
。
Ferns were the first terricolous vascular plants, and still comprise an important part of primary productivity of ecosystems.
蕨类植物是最早登陆维管植物，至今仍然是生态系统初级生产要成。
明：以上例句、词性
类均由互联网资源自动生成，
未经过人工审核，其表达内容亦不代表本软件观点；若发现问题，欢迎向我们指正。
