单词	semicircular
释义	semicirclesemicircle /ˈsɛmiˌsɚkəl/ noun [countable] 1 math, geometry half a circle2a group arranged in a curved line, as if on the edge of half a circle:  A semicircle of chairs faced his desk.—semicircular /ˌsɛmiˈsɚkyəlɚ/ adjective
随便看	onto ontogeny ontological ontology onus onward onyx oodles oof ooh ooh la la oomph oops oops-a-daisy ooze oozy Op. opacity opal opalescence opalescent opaque opaqueness op art op. cit.

英语词典包含48224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。