youdao

The levelling net points are divided into three grades.

并将水准网点的活动水平分为三类。

youdao

Steel welds are classified into three grades in order to evaluate their quality.

按照焊缝质量级别确定的原则，将焊缝级别分为三个等级；

youdao

So is it still being taught? "If the results of a survey we had published this year are accurate, it is being taught by about ninety percent of teachers in grades one to three."

VOA: special.2009.10.29

We'll also, when we grade the concept sheets, we'll give them number grades and we'll just do one, two, or three.

我们也会,在我们给观点报告评分时,我们会以数字一,二,三来打分

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Although the president has visited the Gulf coast three times since the spill began, he is getting poor grades.

VOA: standard.2010.06.10

In 2007 roughly 178, 000 aspirants took the exam for the highest of the three grades of civil servant, comprising just 24, 000 jobs.

ECONOMIST: Public-service careers

U.S. refineries were originally built to produce three grades of gasoline.

FORBES: Magazine Article

Indeed, research by exams group Cambridge Assessment found three A grades at A-level was achieved by 17.5% of students in 2009.

BBC: Aiming for the top A* at A-level