单词	concavo-concave
释义	con·ca·vo-con·cave (kŏn-kā′vō-kŏn-kāv) adj. Concave on both surfaces; biconcave. Used of a lens.
随便看	deep six deep-six deep-sky object Deep South deep space deep structure deep vein thrombosis deep-water deer Deere deerfly deer fly deer grass deerhound deer mouse deerskin deerstalker deer tick deeryard de-escalate deescalate de-escalation de-escalatory deet def

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。