lì / shǐ / kè / shàng / wǒ / men / xué / xí / le / Sà / sāng / Wáng / cháo / de / xīng / shuāi

历史课上，我们学习了萨桑王朝的兴衰。

In history class, we studied the rise and fall of the Sassanid Empire.