This phenomenon of selecting traits associated with youth is known as neoteny, and can be seen in many domestic animals.

这种选择与青年有关的性状的现象被称为幼态，在许多家畜中都可以看到。

We want to learn and understand, partly to make sense of the world but also because of something called neoteny.

们要理解，一方面是为了理解这个世界，另一方面也是因为一种叫做“幼态持续”的东西。

Scientists think their forever-young condition, called " neoteny, " evolved because of their stable habitat.

科家们认为，它们永远年轻的状态，即所谓的“幼态”，是由于它们稳定的栖息地而进化而来的。