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	Syracuse Syrah Syr Darya syrette Syria Syriac Syrian Syrian Desert syringa syringe syringeal syringomyelia syringomyelic syrinx Syros syrphid syrup syrupy sysadmin sysop syssarcosis systaltic system system administrator systematic

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。