lì / shǐ / kè / shàng / wǒ / men / xué / xí / le / Sū / tái / dé / Dì / qū / de / xiāng / guān / lì / shǐ

历史课上，我们学习了苏台德地区的相关历史。

In history class, we studied the history related to the Sudetenland.