名词
中文翻译：求和原理
同义词：
['summing up', 'summarizing']
例句：
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1.The teacher used the summation principle to explain the problem.
老师利用求和原理来解释这个问题。
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2.In statistics, we often use the summation principle to find the average of a set of numbers.
在统计学中，我们经常使用求和原理来找出一组数字的平均值。
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3. The summation principle is an important concept in mathematics that helps us understand and solve problems more efficiently.
求和原理是数学中一个重要的概念，它帮助我们更有效地理解和解决问题。