单词	understratum
释义	un·der·stra·tum (ŭndər-strā′təm, -străt′əm) n. pl. un·der·stra·ta (-strā′tə, -străt′ə) or un·der·stra·tums A substratum.
随便看	iron out iron oxide iron pyrites ironside ironsmith ironstone ironware ironweed ironwoman ironwood ironwork ironworker ironworks irony Iroquoian Iroquois irradiance irradiancy irradiant irradiate irradiation irradiative irradiator irradicable irradicably

英语词典包含135693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。