noun 下载 🔗分享 蕨类植物，蕨。 Any of a group of some twenty thousand species of vascular plants classified in the division Pteridophyta that lack seeds and reproduce by shedding spores to initiate an alternation of generations. Examples : "The forest floor was covered in lush green ferns. " 森林的地面上覆盖着茂盛的绿色蕨类植物。 plant biology nature organism environment science ecology 与AI对话词汇游戏阅读练习
