英语词汇optional的翻译、用法及例句-MX2U.com英汉词典

词汇	optional
释义	optional /ˈɔpʃən(ə)l/ adj.任选的；可自由选择的 Is English an optional lesson, or does everyone have to learn it?英语是选修课还是每个人必修的课程？
随便看	safely safeness safe period safe room safe sex safe space safety safety belt safety belt safety blanket safety blanket safety blanket safety blanket safety catch safety curtain safety deposit box safety deposit box safety first safety glass safety glasses safety match safety net safety pin safety razor safety valve 覂覂覂覂覂\|𢇫\|泛\|䟪覃覃覃覃覃覃覃覃覃覃覃覃覃覃覃

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