large deeply rooted fern of worldwide distribution with upright bipinnate compound tufted fronds
同义词：royal osmund??/??king fern??/??ditch fern??/??French bracken??/??Osmunda regalis
英汉双解词典包含3185865条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。