英语词汇on an optional basis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	on an optional basis
释义	optional — 任择 adj • 可选的 adj • 选配 adj • 选购 adj • 自选 basis — 本 • 根 • 根据 • 道理 basis n — 基础 n • 依据 n • 基本规律 n • 理由 n • 基本原则 n on prep — 关于 prep an num — 一个 num an n — 一项 n option — 选择 • 期权 option n — 方案 n • 选择 n • 购买权 n • 选修课 n • 选择权 n • 可选择的事物 n
随便看	provide relevant functions provide relevant guidance provide relevant information provide relevant input provide relevant support provide relevant training provide reliable provide reliable energy provide reliable power provide reliable technology provide relief provide remarks provide remediation provide remedy for provide remote access provide remote support provide remuneration provide renewed impetus provider environments provide reply provide repository provide repository for provide required provide research provide resilience to

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 —