因细菌、病菌一般生命周期很短，不能繁殖的细菌、病毒就会迅速死亡。

Due to bacteria, virus life cycle is very short in general, can not breed bacteria, viruses will be rapidly killed.

youdao

既然它们能够而且确实可以成功杂交繁殖，它们就不能被归为不同的物种。

Since they can and do successfully inter-breed, they cannot be classed as different species.

《柯林斯英汉双解大词典》

同样，如果一种植物或动物没有留下任何可以繁殖的后代，它就不能把所有的能量浪费在使自己变得更强壮上，因为这是最可能走向灭绝的方式。

Similarly, a plant or animal cannot squander all its energy on growing a big body if none would be left over for reproduction, for this is the surest way to extinction.

youdao

Now, a virus is not capable of reproducing on its own, so if you got a virus into your body somehow and it didn't enter any of your cells, it would cause no damage because it could not reproduce.

病毒自身并不能繁殖,所以如果你的身体感染了病毒,而病毒没有进入细胞的话,因其不能繁殖所以不会对身体造成伤害

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