名词
中文翻译：分级系列
同义词：
['graded sequence', 'graded series', 'graduated sequence', 'graduated series']
例句：
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1. Thegraduates of the university are expected to contribute to society.
大学的毕业生预计将对社会做出贡献。
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2. This is a graduated series of steps that will help you achieve your goals.
这是一系列步骤，将帮助你实现你的目标。
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3.The company has introduced a graduated series of products to meet different customer needs.
该公司已经推出了一个分级系列产品，以满足不同客户的需求。