名词短语
中文翻译：直线族
同义词：
['家族、群体例句：1. The family of straight lines is the foundation of our society.（直线族是我们社会的基石。）']
例句：
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1. The family of straight lines is the foundation of our society.
直线族是我们社会的基石。
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2. The family of straight lines is responsible for the safety of our roads.
直线族负责我们道路的安全。
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3.The family of straight lines is made up of individuals who share a common purpose or goal.
直线族是由共同目标或目的的个体组成的。