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	put on put-on-airs put-on-a-pedestal put-on-bold-face put-on-the-dog put-on-the-map put out put-out-to-pasture put-out-to-sea putrid putridities putridly putridness putridnesses puts put sb away put sb down put sb off (sb/sth/doing sth) put sb out put sb/sth before/above sb/sth put sb/sth through put sb through sth put sb up put-someone-in-place put-someone-wise

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