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，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.

我们要学习和理解，是了理解这个世界，另也是因种叫做“持续”的东西。

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

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