英语词汇“optional”的翻译、意思、用法、释义-英汉双解词典-霍普软件下载网

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单词	optional
释义	optional UK ['ɒp.ʃən.əl] US ['ɑ:p-] adjective ADVANCED ■If something is optional, you can choose whether to do it, pay it, buy it, etc 可选择的；非强制的 •English is compulsory for all students, but art and music are optional.英语是所有学生的必修课，而艺术和音乐则是选修的。
随便看	beaver bebop becalmed became because because of beck beckon become becoming becquerel BEd bed and board bed and breakfast bed linen bed-bath bed-sitting room bed-wetting bedaub bedbug bedclothes bedding bedding plant bedeck bedevil bedfellow bedlam bedmate Bedouin bedpan