cycads

常見(jiàn)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(dòng)精子可區(qū)別于買麻藤和松柏類，它們不產(chǎn)生花粉。
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