名词
中文翻译：Unknown
同义词：
['grade', 'rank', 'classify例句：1. The grader is used to sort the grains by size.（分级器用于按大小对谷物进行分类。）']
例句：
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1. The grader is used to sort the grains by size.
分级器用于按大小对谷物进行分类。
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2.The teacher graded the students' homework on a scale of one to ten.
老师对学生的作业按照一到十的标准进行了评分。
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3.The company has been graded as having high ethical standards.
该公司被评为具有高度道德标准的企业。