英语词汇optional courses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 courses
释义	optional courses conversationalistn. 健谈的人 operationalizevt. 使用于操作,使开始运转,实施
随便看	alignment indicator alignment in dock alignment instrument alignment interaction alignment jig alignment jitter alignment keyway alignment laser alignment machine alignment map alignment mark alignment marker alignment method alignment microscope alignment network alignment nomogram alignment of a hole alignment of axes alignment of bearings by taut wire alignment of canal alignment of channel alignment of crystal alignment of cylinder alignment of data alignment of document

英汉双解词典包含3607232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。