英语词汇optional maintenance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 maintenance
释义	optional — 任择 adj • 可选的 adj • 选配 adj • 选购 adj • 自选 maintenance n — 保持 n • 维持 n • 赡养费 n • 定期维修 n option n — 方案 n • 选择 n • 选修课 n • 可选择的事物 n • 选择权 n • 购买权 n option — 选择 • 期权
随便看	typically for typically foreseeable damage typically foreseen typically formulated typically formulation typically found in typically french typically funded typically gathered typically given typically good typically greater typically have typically includes typically increases the typically indicates typically intended typically involves typically involving typically it is typically known typically leading to typically leads to typically less than typically linked 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。

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