英语词汇are 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	are optional
释义	optional — 任择 adj • 可选的 adj • 选购 adj • 选配 adj • 自选 are — 是 be v — 有 v • 是 v • 做 v • 属 v • 当 v • 存在 v • 成为 v • 乃 v • 乃是 v option n — 方案 n • 选择 n • 可选择的事物 n • 选修课 n • 选择权 n • 购买权 n option — 选择 • 期权
随便看	as specified in section as specified in table as specified in the budget as specified in the invoice as specified when as spelled as spin off as spline as spoils of War as sponsored by as sponsorship as spreads widened as Spring approaches as springboard for as springboards as-spun ass soon as possible as stable as as stable as possible as staining as stamping as standalone as standard as standard business practice as standardization

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 —