Translation of "Junior" in Chinese

I'm a junior high school student.

我是個國中生。

I'm not a junior high school student.

我不是個初中生。

Jimmy is junior to me by two years.

吉米比我小两岁。

I have a son in junior high school.

我儿子在上初中。

Junior, why don't we go into a group together?

Junior，我们为何不一起加入同一个小组呢

He eventually married an Italian woman ten years his junior.

他最终和一个比他小十岁的意大利女人结了婚。

He's just a normal junior high school student, not particularly intelligent.

他只不過是個普普通通的中學生，不算特別聰明。

- I am his junior by three years.
- I'm three years younger than he is.

我比他年轻3岁。

- Edward is junior to Robert.
- Edward is younger than Robert.
- Eduardo is younger than Roberto.

爱德华比罗伯特年轻。

The students went all over the classroom looking for their friends and buddies, unfortunately to the point at which Junior couldn't find anyone!

学生们仔细的检查整个教室以寻找他们的朋友们和伙伴们，不幸的没有任何一个低年级学生可以找到任何人