单词	underclay
释义	underclay noun : a layer of clay beneath a coal bed often containing fossil roots of coal plants and constituting fireclay Word History Etymology under entry 3 + clay
随便看	bogie wagon bogied bogieing bogieman bogies Bogijiab bogijiabs bogland boglands bogle bogles boglet bogmats BOGO bogoaks Bogodo Lama bogodo lamas Bogomil bogomile bogomiles Bogomilism bogomils bogomips bogong moth bogongs

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。