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	optional['ɔpʃənəl] adj.可选择的，任选的，随意的，非强制的
随便看	self-sterile self-sterility self-sterility genes self-stick self-sticking self-stimulation self-stimulations self-stimulatory self-studies self-study self-styled self-styleds self-subsistence self-subsistent self-sufficiencies self-sufficiency self-sufficient self-sufficiently self-sufficing self-suggestion self-suggestions self-support self-supported self-supportedness self-supporteds

英汉双解词典包含483723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。