The plant body resembled a fern and did not produce flowers, the seeds developing from megasporangia borne on the margins of the fronds.是什么意思_The plant body resembled a fern and did not produce flowers, the seeds developing from megasporangia borne on the margins of the fronds.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句