fern of North America and Europe whose rhizomes and stalks yield an oleoresin used to expel tapeworms
同义词：Dryopteris filix-mas
Centre manager Peter Ferns said the male osprey was not the reserve's resident male, who has not yet been seen but could still arrive some time after his partner.
BBC: Elderly osprey set for 50th egg
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。