名词
中文翻译：分级
同义词：
['gradation', 'grading scale', 'grade']
例句：
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1. The company has implemented anew grading system for its products.
该公司已经为其产品实施了新的分级系统。
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2.The teacher graded the students' workbased on their performance.
老师根据学生的表现来评分。
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3. The grading system is designedto ensure fairness and accuracy in assessments.
这个分级系统旨在确保评估的公平性和准确性。