4、6、8、10都是偶数。

4, 6, 8, 10 are all even numbers.

《牛津词典》

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.

youdao

相反，它们最多可能涉及一点算术，比如“两个奇数之和为偶数”，以及常识。

Instead they may involve, at most, a little arithmetic, such as "the sum of two odd numbers is even", and common sense.

youdao

I think it depends on whether the list is odd or even in length. Actually, that's probably not true. With one, it'll probably always get it down there, but if I've made it just equal to two I might have lost.

是奇数还是偶数，事实上,这是不正确的，如果最后剩下一个,那可能得到了结果,如果剩下两个，可能错了,所以，首先我们要格外。

麻省理工公开课 - 计算机科学及编程导论课程节选

And then in the even case I've got to do a square and the divide.

如果是偶数情况的话,我还要再做一次除法和求平方。

麻省理工公开课 - 计算机科学及编程导论课程节选

It's not as though, oh, today is odd but maybe tomorrow it will be even.

并不是说，哦，今天它是奇数,也许明天就是偶数了。

耶鲁公开课 - 死亡课程节选