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	sagittarias sagittaries sagittariidaes Sagittarius sagittariuses sagittary sagittas sagittate sagittocyst sagittoid sagless sagne-mon sago sago fern sago palm sago pondweed sagoin sagoins sagos sagoweer Sagra Sagres sags saguaro Saguaro National Park

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。