Every child in grades 3-5 received a total of eighteen 60-minute lessons across the school year.

在整个学年中，3-5年级的每个孩子都参加了18次时长为60分钟的课程。

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Potatoes are sold in grades.

马铃薯分级出售。

youdao

Milk is sold in grades.

牛奶是分等级出售的。

youdao

The Scholastic Arts and Writing Awards are open to students around the world in grades seven through twelve.

VOA: special.2011.05.27

The in class mid-terms--the grades will be roughly 10% problem sets, 20% first mid-term, 30% second mid-term, 40% final.

期中那次是随堂考,在最后成绩中,习题成绩占10%,第一次期中占20%,第二次期中占30%,期末考试占40%

耶鲁公开课 - 金融市场课程节选

What happened? I'm down here and try, I'm trying do get grades, which is a call to that function, which is not bound in my computer.

尝试着读取成绩，这被称为函数,是不被我的计算机局限的。

麻省理工公开课 - 计算机科学及编程导论课程节选

Ms Barton puts the improvement in grades down to "hard work" and an improvement in teaching.

BBC: Schools celebrate league table success

There was also a greater number of operators - nine - in grades A and B than previously.

BBC: Rail firms rapped over timekeeping

In 1997, students in grades 10 to 12 from low-income families dropped out at an annual rate of 12.3 percent.

UNESCO: II Part Analytic Section