'grader'是英语单词，中文翻译为“分级器、平地机”。在美国、加拿大等国家，'grader'通常指平地机，在学术领域中则指批改试卷或成绩的人员。
以下是9个含有'grader'的例句：
1. The teacher assigned the task of grading the term papers to the graders. (老师把批改学期论文的任务交给了学生助手。)
2. The road construction crew used a grader to level the earth. (道路建设队使用平地机将土地平整。)
3. The school hired several graders to score standardized tests. (学校聘请了几个批改标准化测试卷的人。)
4. Mary is a grader in the history department. (玛丽是历史系的学生助手。)
5. The new grader has a GPS system for more precise grading. (新的平地机配备了GPS系统，以获得更精准的平整效果。)
6. The grader marked out a safe route for the hikers. (领队为远足者划定了一条安全路线。)
7. The grader's job requires patience and attention to detail. (学生助手的工作需要耐心和注重细节。)
8. The grader identified several areas of improvement for the student's essay. (学生助手指出了学生论文需要改进的若干方面。)
9. The grader's comments helped the student understand where he went wrong. (学生助手的评论帮助学生理解自己的错误之处。)
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