Some historians think the system was introduced when the Aryans, a powerful nomadic tribe, migrated to the Indus Valley around 1500 BC.

一些历史学家认为，这一在公元前 1500 年左右，强大的游牧部落利安人迁移到印河谷时引入的。

There's no real evidence that these Aryans ever existed, but that didn't stop romantic thinkers like Johann Gottfried Herder who believed that their myths, along with other things, embodied the simplicity and purity of the German 'volk.'

没有确凿的证据表明这些利安人曾经存在，但这并没有阻止浪漫主义思想家如约翰·戈特弗里德·赫尔德相信，他们的神话以及其他事物体德国“人民”的简单和纯粹。

The discovery of Proto-Indo-Europian led some to posit that it was spoken by a group called " Aryans, " whose myths were the basis for all European, Indian, and Southwest-Asian myths — a purported explanation for their similarities.

原始印欧语的发使一些人推测，这种语言由一个名为“利安人”的群体所使用，他们的神话所有欧洲、印和西南亚神话的基础——这被认为它们相似性的解释。