double grading

例句：

1. 1. The company implemented a double grading system to improve efficiency.
   该公司实施了双重分级系统以提高效率。
2. 2. The teacher asked the students to double grading their homework.
   老师要求学生们对作业进行双重评分。
3. 3.The project was double grading for both quality and quantity.
   这个项目既注重质量也注重数量的双重评定。