In the set of natural numbers, every number is either odd or even.
在自然数的集合里，每个数字不是奇数就是偶数。
In the set of natural Numbers, every number is either odd or even, and there is not one even number that is more or less even than any other even number.
在自然数的集合里，每个数字不是奇数就是偶数，不存在一个偶数或多或少比另一个偶数更像偶数这样的情形。
In the set of natural Numbers, every number is either odd or even, and there is not one even number that is more or less even than any other even number.
在自然数的集合里，每个数字不是奇数就是偶数，不存在一个偶数或多或少比另一个偶数更像偶数这样的情形。
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