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

我来告诉你我们二年级的班级都会做什么。

youdao

When I was in the eighth grade, my class was assigned to be friends with the second-grade kids.

当我上八年级的时候，我们班被分配和二年级的孩子做朋友。

youdao

I flunked math in second grade.

我二年级时数学不及格。

《牛津词典》

And the question is, so how many pigs does he have, and how many chickens does he have? Wow. What a deep problem, right? But you're going to see why we're going to use this in a second. So you know how to solve this, this is a fifth-grade problem, right?

为了避免歧义，这些猪和鸡都是健全的,现在问题是它到底有多少只猪和鸡呢？,多深刻的一个问题啊，对吗？,但是你将要看到的是,我们为什么要举这个例子,你知道如何解答这个问题？

麻省理工公开课 - 计算机科学及编程导论课程节选

Her son has been attending second-grade classes at a facility in nearby Monroe, Conn.

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For many of the fifth graders, it's clearly a struggle to demonstrate the second-grade-level skill.

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When I received the news about Junior, I had just walked out of my daughter's second-grade classroom.

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