英语词汇optional categories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 categories
释义	optional — 任择 adj • 可选的 adj • 选配 adj • 选购 adj • 自选 categories pl — 类别 n • 分类 pl option n — 方案 n • 选择 n • 选修课 n • 购买权 n • 可选择的事物 n • 选择权 n option — 选择 • 期权 category n — 一类 n • 门 n • 品类 n • 类型 n • 种类 n • 范畴 n • 部类 n category 5— 第五类
随便看	by a pitch by a pivot by a plurality of by a poll by apologizing by apoptosis by a power of by app. by apparel by appealing by appearance by appendices by applicable law by applicable law and regulations by applicable local law by application of pressure by application to the courts by applying by applying a policy by applying appropriate by applying a torque by applying for membership by applying separately by applying technology by applying the above

英汉双解词典包含2273206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。

optional —