unaccompanied minor
collocation无成人陪伴的未成年人（独自乘机或旅行的未成年人）
The airline requires unaccompanied minors to pay an extra fee.
航空公司要求无成人陪伴的未成年人支付额外费用。
未成年人
先理解核心含义，再看它在真实句子里的用法。
未成年人
a person below the legal age of adulthood; a child or youth who is not yet legally an adult.
The club does not allow minors to enter without an adult.
这家俱乐部不允许未成年人无成人陪同进入。
未成年人,未达到法定年龄的人,法律上责任较少,权利和特权较少
A child, a person who has not reached the age of majority, consent, etc. and is legally subject to fewer responsibilities and less accountability and entitled to fewer legal rights and privileges.
较小的人或事物,地位较低的人、群体或事物
A lesser person or thing, a person, group, or thing of minor rank or in the minor leagues.
通过删除一个或多个行和列获得的方阵的行列式
A determinant of a square matrix obtained by deleting one or more rows and columns.
欧洲和亚洲的夜蛾,主要属于Oligia和Mesoligia属。
Any of various noctuid moths in Europe and Asia, chiefly in the Oligia and Mesoligia genera.
She is a minor, so her parents must sign the permission slip.
她是未成年人，所以她的父母必须签署许可单。
He chose biology as his minor and chemistry as his major.
他选择生物学作为副修科目，化学作为主修科目。
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无成人陪伴的未成年人（独自乘机或旅行的未成年人）
The airline requires unaccompanied minors to pay an extra fee.
航空公司要求无成人陪伴的未成年人支付额外费用。
已获法律自主权的未成年人（经法院判定不受父母控制）
An emancipated minor can sign a lease in some states.
在一些州，已获法律自主权的未成年人可以签署租约。
未成年人禁止入内；不允许未成年人进入
The bar has a strict no minors policy after 9 p.m.
这家酒吧晚上九点后有严格的未成年人禁止入内规定。
在小联盟（打比赛或任职）
He played in the minors for two years before joining the major league team.
他在小联盟打了两年球才加入大联盟球队。
未成年人的家长
The parent of a minor must sign the consent form.
未成年人的家长必须签署同意书。
我是个未成年威胁。
The club does not admit minors.
俱乐部不允许未成年人进入。
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记忆联想：major（成年的）与 minor（未成年的）相反；法律上还没到成年年龄（age of majority）的人就是 minor（未成年人）。
语域：formal 常见场景：法律文书、新闻报道、官方表格 minor 作名词指未成年人，通常用于法律、正式文件和新闻报道中，比较正式；日常口语中更常说 child 或 kid。
可数名词，复数形式为minors。
Dictionary facts from ECDICT, WIKTIONARY, WORDNET.