英语词汇optional switch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 switch
释义	optional switch oppositionaladj. 反对的,对抗的 nationalisticadj. 民族主义的；国家的；民族的 operationalizevt. 使用于操作,使开始运转,实施
随便看	reserve a room reserve arrangement reserve a seat reserve asset reserve assets reserve assets ratio reserve assistance program reserve available for private nonbank deposits reserve balance reserve balance as a percentage of government expenditure reserve bank credit Reserve Bank of Australia Reserve Bank of Malavi Reserve Bank of New Zealand reserve bank reserve bar reserve bars reserve base reserve base of wagons Reserve battery reserve battery design reserve battery, power supply reserve bill reserve binding capacity reserve book

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