common grade

例句：

1. 1. In the final exam, the common grades are based on the students' performance in each subject.
   在期末考试中，普通等级是基于学生在每个科目的表现来评定的。
2. 2.The teacher explained that the common grades were used to assess students' overall understanding of the course content.
   老师解释说，普通等级是用来评估学生对课程内容整体理解程度的工具。
3. 3. The common grades were not enough to determine whether a student would be promoted or failed.
   普通的等级并不足以决定一个学生是否会被提升或失败。