单词	biannual
释义	bi·an·nu·al (bī-ăny-əl) adj. 1. Occurring twice each year; semiannual. 2. Occurring every two years; biennial. bi·annu·al·ly adv.
随便看	four-letter word four-o'clock four-peat fourpenny nail fourplex four-poster fourragère fourscore foursome foursquare foursquarely four-star fourteen fourteenth fourth fourth dimension fourth estate Fourth of July fourth quantum number fourth wall Fourth World Fourth-World four-way four-wheel drive four-wheeler

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。