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单词	biconcave
释义	bi·con·cave (bī′kŏn-kāv, bī-kŏnkāv′) adj. Concave on both sides or surfaces: a biconcave lens. bi′con·cavi·ty (-kăvĭ-tē) n. biconcave biconcave (left) and biconvex (right) lenses
随便看	beta sheet beta test beta-test betatron beta wave betaxolol betel Betelgeuse betel nut betelnut betel palm beth bethanechol Bethany Bethe Bethe cycle be the death of bethel Bethel be there for be there for (someone) be there for someone Bethesda be the shit bethink

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。