名词
中文翻译：基本规则
同义词：
['fundamental rule', 'fundamental principle']
例句：
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1. The basic rule of mathematics is to always use the same symbols.
数学的基本规则是始终使用相同的符号。
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2. The company's basic rule is to provide excellent customer service.
公司的基本规则是提供卓越的客户服务。
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3. The teacher explained the basic rule of fractions clearly.
老师清楚地解释了分数的基本规则。