I participated in Qi Gong training class in my junior year.

我在三年级时曾参加过气功训练班。

youdao

In my junior year, I served as monitor of my class, and received Advanced Person of Jiangxi University of Science and Technology.

在我大三的时候，我担任了我们班的班长，而且荣获江西科技大学先进个人的荣誉称号。

youdao

I spent my junior year in France.

我三年级是在法国念的。

《牛津词典》

Like, I mean, in my junior year I took a class where there were like six people in the class

就像，我是说，我大三的时候我上的一门课有六个人，

要考入大学 - SpeakingMax英语口语达人

While I was in college, part of the beauty and elegance of my undergraduate education was that between my junior and senior years I went on one of our college's seminars.

在我的大学期间，我的本科学业中的,一些美好的回忆,是在我的大三大四期间,我参加了一个学校的研讨会。

普林斯顿公开课 - 人性课程节选

Now in my junior year at Howard University, I am still managing school work and my illness.

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I'd rather get around on my bike than in a BMW. But to my lasting embarrassment, in my junior year, I traded my friends for a less eccentric crowd.

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After deciding as a junior in high school to follow in the footsteps of my FFA advisor, Mr. Jim Schultz, I was on my way.

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