During the reign of Cyrus II and Darius I, the Persian Empire had expanded substantially to  become the most powerful empire in western Asia.

在居鲁士二世和大流士一世统治期间，波斯帝国大幅扩张， 成为西亚最强大的帝国。

As King, Darius I married Cyrus II’s daughter,   Atosa, and she conceived Xerxes, who then became the first royal son. Although the empire was  large and thriving when Xerxes took power, it was far from trouble-free.  The country lacked unification.

作为国王，大流士一世娶了居鲁士二世的女儿阿托萨， 她怀上了薛西斯， 后者后来成为第一个皇室儿子。 薛西斯掌权时， 虽然帝国幅员辽阔、繁荣昌盛，但也并非一帆风顺。 这个国家缺乏统一。