常見例句Genus of small evergreen tropical and subtropocal American cycads.一種小的常綠熱帶和亞熱帶美洲蘇鐵。Cycads and ginkgo have motile sperm, unlike gnetophytes and conifers, which produce pollen.蘇鐵和銀杏具活動精子可區(qū)別于買麻藤和松柏類，它們不產(chǎn)生花粉。 返回 cycads