Younger in years.

较年幼的。

Of lower standing.

资历浅的。

Belonging to youth.

青少年的。

Later in date or occurrence.

时日较新[近]的。

Designating, or pertaining to, the next to the last year of a collegiate or high-school course.

(美国四年制中学或大学中)三年级的。

The younger.

年少者。

One of lower standing.

晚辈；后进。

In American colleges and high schools, a student in the next to the last year.

(美国四年制中学或大学)三年级的学生。