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	Hans Christian hanse hanseatic Hanseatic League hansel hansel Hansen's disease Hans Guido von hansom hant ha'nt hantavirus Hanukah Hanukkah hanuman haole Haora Haora hap hapax legomenon ha'penny haphazard haphazardly haphazardness hapless

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