Bdelloid rotifers, meanwhile, have been reproducing parthenogenetically for 60 million years.

与此同时，蛭形轮虫已经孤雌生殖了近 6000 万年。

In fact, some animals only ever undergo parthenogenesis, while others can reproduce both sexually and parthenogenetically.

实际上，有些动物只进行孤雌生殖，而另外一些则既可以进行有性繁殖，也能进行孤雌生殖。

Species which reproduce parthenogenetically and sexually have the best of both worlds - enjoy the advantages of very different things at the same time.

既能单性生殖又能有性生殖的物种两头受益——同时享有截然不同的事物的优势。