下面是一些例句:
The set of all prime numbers is infinite. (集合中所有的质数是无限的。)
The set of all odd numbers is a subset of the set of all natural numbers. (所有奇数的集合是自然数集合的子集。)
The union of two sets is a set that contains all the elements of both sets. (两个集合的并集是一个包含两个集合中所有元素的集合。)

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最佳回答 2023-02-13