cycads
英 [si:'kædz] 美 [si'kædz]

n.

苏铁(cycad的复数)；

英英释义

cycad

• n.any tropical gymnosperm of the order Cycadales; having unbranched stems with a crown of fernlike leaves

双语例句

1. Genus of small evergreen tropical and subtropocal American cycads.
   一种小的常绿热带和亚热带美洲苏铁。
2. Cycads and ginkgo have motile sperm, unlike gnetophytes and conifers, which produce pollen.
   苏铁和银杏具活动精子可区别于买麻藤和松柏类，它们不产生花粉。

权威例句

Cycads
world list of cycads
The Biology of the Cycads
Cycads: their evolution, toxins, herbivores and insect pollinators.
Cycads: evolutionary innovations and the role of plant-derived neurotoxins.
A phylogeny of cycads (Cycadales) inferred from chloroplast matK gene, trnK intron, and nuclear rDNA ITS region
Root-based N2-fixing symbioses: Legumes, actinorhizal plants, Parasponia sp. and cycads
Root-based N 2 -fixing symbioses: Legumes, actinorhizal plants, Parasponia sp. and cycads
DNA Barcoding in the Cycadales: Testing the Potential of Proposed Barcoding Markers for Species Identification of Cycads
Testing co-evolutionary hypotheses over geological timescales: interactions between Mesozoic non-avian dinosaurs and cycads.