when something precisely like that did happen.

因为类似的事情确实曾经发生过
These Germanic and other tribes,

那些日耳曼部落和其他部落
who were largely located north and northeast of Europe,

主要位于欧洲北部和东北部
came down--I should say not Europe,

的入侵我应该说不是位于欧洲
but the Roman Empire--

而是位于罗马帝国
came down and ultimately destroyed it by invasion.

入侵并且完全摧毁了罗马帝国
And of course, there are more theories about the fall of the Roman Empire

当然罗马帝国衰落的理论比
than there are about the fall of the Mycenaean world.

迈锡尼衰落的理论更多
Anyway,

无论如何
connected to all of this was a very interesting Greek myth,

和这一切有联系的是一个有趣的希腊神话
which speaks about the return of the Heraclides.

说的是赫拉克利德后裔的回归
They are the sons of the mythical hero Hercules,

他们是神话英雄赫拉克勒斯的子孙