| 1. | The sum of any two elements has an even number of prime factors .
其中任何两个元素之和有偶数个素因子。 |
| 2. | "two" is a pair .
“2”是偶数。 |
| 3. | Prove that if n is not a square then it has an even number of divisors .
证明：若n不是完全平方数，则n有偶数个因数。 |
| 4. | A circ is an undirected graph having only vertices of even nonzero degree .
一广义圈是一无向图，其顶点次数都是非零偶数。 |
| 5. | The permutation is even if the number of inversions it contains is even .
如果一个排列中含有的反序的个数是偶数，则称它为偶排列。 |
| 6. | The sum of all the degree is 24, an even number, which is twice the number of edges .
所有次数的和是24，是个偶数，它是边数的两倍。 |
| 7. | If a rectangle can be covered using these tiles then covering uses an even number of tiles .
如果一个矩形可用这种瓷砖盖住，那么所有的瓷砖一定是偶数。 |
| 8. | The type of intensity alternation(whether the even or the odd lines are strong)is determined by another important nuclear property .
强度更迭的类型（偶数谱线强还是奇数谱线强）取决于另一个重要的原子核性质。 |
| 9. | The type of intensity alternation(whether the even or the odd lines are strong)is determined by another important nuclear property .
强度更迭的类型（偶数谱线强还是奇数谱线强），取决于另一个重要的原子核性质核统计法。 |
| 10. | A big even number as the sum of two odd prime numbers
大偶数可表示为两个奇素数之和 |
