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	seguidilla sei seicento seiche seidel seif dune Seifert seigneur seigneurial seigneury seignior seigniorage seigniorial seigniory Seiji seine Seine seiner seise seisin seism seism- seismic seismically seismicity

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。