单词	understratum
释义	understratum noun : substratum Word History Etymology under entry 3 + stratum
随便看	prehistorian prehistorians prehistoric prehistoric archaeology prehistorical prehistorically prehistories prehistory prehnite prehnitene prehnitic acid preholiday prehominid Prehominidae prehominids prehuman prehumans prehydration prehypophysis preifes preifs preignac preignition preignitions preimaginal

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。