英语词汇optional course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 course
释义	optional course conversationaladj. 谈话的,会话的健谈的,善于辞令的口语的,适... conceptionaladj. 想象的；理论的 operationalizevt. 使用于操作,使开始运转,实施
随便看	proper ligament proper ligament of ovary proper ligaments of costal cartilages proper limit proper loan proper look out Proper Lookout proper Loreatz group proper Lorentz group proper Lorentz transformation proper lubrication properly properly anaesthetized properly deterioration indicator Properly discontinuous properly discontinuous group properly divergent properly divergent sequence properly divergent series properly elliptic properly hyperbolic properly implies properly imply properly improved strain of tree properly include

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。