当我在我的大学里时，我的一个同学坐在我旁边。

When I was in my university, one of my classmates sat beside me.

youdao

一个同学回忆说，学的最深奥的莫过于雷暴雨的晚上该做什么。

A fellow student could recall being taught nothing more profound than what to do in a thunderstorm at night.

youdao

他和他的一个同学创办了那份杂志。

He started the magazine with a schoolmate.

《柯林斯英汉双解大词典》

So I thought I'd begin with a short note that one of your classmates sent to me earlier this week.

我从这周早些时候,你们其中一个同学给我的一张字条开始。

哈佛公开课 - 计算机科学课程节选

An old crony and former colleague of mine was taking a course at Johns Hopkins in the 1960s.

我的一个老朋友也是我的大学同学,二十世纪六十年代的时候在约翰斯，霍普金斯大学上学。

耶鲁公开课 - 文学理论导论课程节选

There's a guy in about the fifth row there who's missed too much sleep, so somebody just nudge him. That's it, good.

第五排有一个同学,可能很缺乏睡眠吧,旁边的人把他叫醒吧

耶鲁公开课 - 博弈论课程节选