A group of cabbage cultivars (Brassica oleracea, family Brassicaceae) in which the central leaves do not form a head. Curly- and flat-leaved varieties of kale grown in Greece in the fourth century bc are believed to be the ancestors of modern kale.
Mike Allaby
科学参考收录了60776条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。