First to fall was the Sassanians, the last non-Muslim successor to the Persian Empire.

首先倒下的是波斯帝国的最后一位非穆斯林继承人萨珊人。

And situated as they were between two very wealthy empires—the Byzantines and the Sassanians—there was plenty to fight for.

由于他们位于两个非常富有的帝国——拜占庭帝国和萨珊帝国——之间，因此有很多东西可以为之而战。

The enemies in the East, like the Persian Parthians and the Persian Sassanians, were real empires, not just bands of warriors.

东方的敌人， 如波斯帕提亚人和波斯萨珊人，是真正的帝国， 而不仅仅是一群战士。