英语词汇“optional”的读音、翻译、释义、用法及例句-出国留学网

词汇	optional
释义	optional /ˈɒpʃənl \|\|; ˈɑpʃənḷ/adj that you can choose or not choose 可选择的；非强制性的: an optional subject at school 学校里的选修科目 [OPP] compulsory or obligatory 反义词为compulsory或obligatory
随便看	non-communicant noncommunicating non-communicating noncommunication noncommunications noncommunicative noncommunicatively noncommunicativeness noncommunicativenesses noncommunist noncommunists noncommunities noncommunity noncommutative noncommutativities noncommutativity noncomparabilities noncomparability noncomparable noncompatible noncompatibleness noncompatiblenesses noncompatibly non-compearance noncompensated

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