英语词汇optional怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	optional
释义	op·tion·al AHD[ŏpʹshə-nəl] D.J.[ˈɒpʃənəl]K.K.[ˈɑpʃənəl]adj.（形容词）abbr. opt.【缩写】 Left to choice; not compulsory or automatic.任选的；非强制的或随意的 Related Forms继承用法opʹtionally adv.（副词）
随便看	preselect presell presence presence of mind presences present present presentable present arms presentation presentation Presentation College Presentation College presentations presentative present-day presented presentee presentees presentient presentiment presentiment presentiments presenting presently

英汉双解词典包含166908条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。