| 单词 | 维管植物 |
| 释义 | 〔tracheophyte〕Any of various vascular plants, including seed plants and ferns, having a conducting system of xylem and phloem.导（维）管植物：任何种类的维管植物，包括种子植物和蕨类植物，具有木质部和韧皮部导管系统〔tracheid〕A cell in the xylem of vascular plants.管胞：在维管植物的木质部中的细胞〔alkaloid〕Any of various organic compounds normally with basic chemical properties and usually containing at least one nitrogen atom in a heterocyclic ring, occurring chiefly in many vascular plants and some fungi. Many alkaloids, such as nicotine, quinine, cocaine, and morphine, are known for their poisonous or medicinal attributes.生物碱：有机化合物的一种，通常呈碱性且在一杂环中至少含有一个氮原子，主要存在于许多维管植物和一些真菌中。许多生物碱，如尼古丁、金鸡纳霜、可卡因和吗啡都以其毒性或在医药方面的特性而为人们所熟知 |
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