lì shǐ / kè shàng / lǎo shī / jiè shào / le / Gāo ěr chá kè / zài / é guó nèi zhàn / zhōng / de / jīng lì

历史课上，老师介绍了高尔察克在俄国内战中的经历。

In history class, the teacher introduced Kolchak's experiences during the Russian Civil War.