单词	filter bed
释义	filter bed noun : a sand or gravel bed for filtering water or sewage Word History First Known Use 1828, in the meaning defined above
随便看	Rabi al-Awwal Rabi al-Thani rabic rabid rabider rabidest rabidities rabidity rabidlier rabidliest rabidly rabidness rabidnesses rabies rabiform Rabin rabinet rabious rabirubia rabis rabs rabulistic rac rac distribution raca

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。