他们是二年级的学生。

They are pupils of Grade Two.

youdao

二年级的时候，老师让我们每个人比赛越过攀爬架。

Once in the second grade, our teacher had each of us race across the monkey bar.

youdao

我来告诉你我们二年级的班级都会做什么。

Let me tell you what we do in our second-grade class.

youdao

So historically, the course is a lot of sophomores who, like me perhaps, are realizing that they finally have time to explore beyond their own interests.

从往年数据上可以看出，上这个课程的大都是大学二年级的学生，可能跟当时的我一样，开始认识到我们终于有时间,来探究我们兴趣以外的事情。

哈佛公开课 - 计算机科学课程节选

His daughter, Louise, is by now a college sophomore.

他的女儿，路易斯，现在是大学二年级学生。

耶鲁公开课 - 1945年后的美国小说课程节选