junior可作形容词和名词，基本含义有“地位低下的”、“青少年的”、“职位较低者”、“小学生”等；senior也可作名词和形容词，含义有“级别高的”、“成人的”、“上级”、“上司”等。

junior的例句

I leave junior with Mom when I'm at work.

我工作时就把儿子留给母亲照看。

She's four years his junior.

她比他小四岁。

I couldn't transfer all my credits from junior college.

我无法把我在专科学校的所有学分都转过来。

I spent my junior year in France.

我三年级是在法国念的。

Junior hospital doctors are thrown in at the deep end in their first jobs.

医院的初级医生开始工作时会遇上未曾料到的困难。

senior的例句

My brother is my senior by two years.

我哥哥比我大两岁。

She'll be racing for the senior team next year.

明年她将参加高级组别的比赛。

It was an important meeting and a bad time to have a senior moment.

那是个重要会议，可不能犯糊涂。

Senior management have given their seal of approval to the plans.

高层管理部门已经正式批准这些计划。

She was ten years his senior.

她比他大十岁。