英语词汇“optional”的读音、翻译、释义、用法及例句-语文网

词汇	optional
释义	optional KK:[`ɑpʃәnḷ] DJ:[`ɔpʃәnәl] adj. 1. 随意的; 非必须的 n. 1. 选修科目同义: adj.自愿的, 志愿的 voluntary elective 反义: adj.随意的; 选修的 compulsory 反义参见: required
随便看	trade terms trade terms with commission trade terms without commission trade ticket trade union unvoice unvoiced unwaged unwakened unwanted unwarily unwariness unwarlike unwarned unwarped unwarrantable unwarranted unwary unwashed unwasted unwatchful unwatered unwavering unwaveringly unweakened

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