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1. The teacher explained the concept of ring multiplication to the students.
老师向学生们解释了环形乘法的概念。
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2. In mathematics, ring multiplication is used to find products of sets of numbers.
在数学中，环形乘法用于计算集合中数字的积。
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3. The ring multiplication table shows the multiplication of numbers from 1 to 9.
环形乘法表展示了从1到9的数字的乘法。