双语例句
- 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。 - 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
Cycadsworld list of cycadsThe Biology of the CycadsCycads: 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 regionRoot-based N2-fixing symbioses: Legumes, actinorhizal plants, Parasponia sp. and cycadsRoot-based N 2 -fixing symbioses: Legumes, actinorhizal plants, Parasponia sp. and cycadsDNA Barcoding in the Cycadales: Testing the Potential of Proposed Barcoding Markers for Species Identification of CycadsTesting co-evolutionary hypotheses over geological timescales: interactions between Mesozoic non-avian dinosaurs and cycads.
