| 词汇 | cycad |
| 语种 | 英语、汉语、英汉翻译、汉英翻译 |
| 释义 | cycad noun[ C ] uk /ˈsaɪ.kæd/ us /ˈsaɪ.kæd/ a plant that grows in hot regions, similar to a palm(= a tree that has a single trunk with a mass of long pointed leaves at the top) with large cones(= hard, dry, oval fruits), that was very common in the Triassic and Jurassic eras(= the period of time between around 245 and 146 million years ago): Cycads were once the most successful plant on the planet and were eaten by dinosaurs. Some cycad species originated up to 250 million years ago. Cycads and palms are often mistaken for one another, but cycads are gymnosperms and bear cones, while palms are angiosperms, which flower and bear fruit. The park has more than 1,100 species of orchids, acacias, bamboos, figs, palms, and cycads. There are about 300 species of cycad, and most are threatened with extinction. Types of plant acanthus air plant amaranth Andromeda angiosperm emergent evergreen fiddlehead grower gymnosperm mossy mugwort mustard non-hardy non-legume spleenwort starter plug succulent sundew tenderness |
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