No minors inside.未成年人谢绝入内。
He had three minors this semester.这学期他有三门副修科目。

minor在美式英语中还可用作不及物动词,作“副修某科”解。例如:
He's going to minor in Economics.他准备副修经济学。

［同义词］ adj.  secondary, smaller n.  boy, girl, child, youth
［反义词］ adj.  major n.  adult, grown-up
［词源］＜拉丁语minor(较少,较小的)

1.minor用作形容词的基本含意是指某事物在程度、大小、数量或重要性等方面不如其他事物。该词常用作定语,偶尔也可用作表语。
2.minor本身已有比较的含意,因而该词不用于比较等级。

用作定语
▲～+n.
The young actor was given a minor part in the new play.年轻的男演员在这出新戏里被分派担任一个小角色。
A minor fault shouldn't be neglected.小错也不该被忽略。
She had a minor operation the day before yesterday.前天她做了一次小手术。
用作表语
▲S+be+～
The infection is fairly minor; nothing to worry about.感染不严重,用不着担心。