名词
中文翻译：第三等级
同义词：
['tertiary', 'tertiary class', 'third-class']
例句：
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1. The company has been divided into three tiers of management.
该公司已经被划分为三个管理层级。
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2. The tercile system is a way to categorize information based on its importance.
三级分类系统是一种根据信息的重要性进行分类的方法。
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3. The tercile system is used in many industries to organize products by their level of complexity.
三级分类系统被广泛应用于许多行业，用于将产品按照其复杂程度进行分类。