One of either sex who is not yet legally of age.

未成年者。

A subject next in importance to a student's major subject.

【美】辅修科目。

Smaller; less; unimportant.

较小的；较少的；不重要的。

Less by half a step than the corresponding major interval; hence, indicating scales in which such intervals occur.

【乐】小调的；短音阶的。

Under legal age.

未成年的。