noun 下载 🔗分享 裸子植物 Any plant such as a conifer whose seeds are not enclosed in an ovary. Examples : "The pine cones on our Christmas tree come from gymnosperms, plants with seeds not enclosed in an ovary. " 我们圣诞树上的松果来自裸子植物,这类植物的种子没有包在子房里。 plant biology nature seed 与AI对话词汇游戏阅读练习