匈奴人在罗马帝国的衰落中扮演了重要角色。

The Hun played a significant role in the fall of the Roman Empire.

日耳曼部落在罗马帝国的衰落中起了关键作用。

The Germanic tribes played a crucial role in the fall of the Roman Empire.

因此西罗马帝国的衰落和覆灭也就可以说得通了。

Thus it makes sense that the decline and fall of the Western Empire.

罗马帝国的衰落和黑暗时代的到来也是多事之秋。 。

Thee fall of the Roman empire and the coming of the dark ages were troubling times.