lì / shǐ / kè / shàng / lǎo / shī / jiè / shào / le / Mǎ / jiā / jūn / zài / Gān / sù / hé / Níng / xià / de / huó / dòng

历史课上，老师介绍了马家军在甘肃和宁夏的活动。

In history class, the teacher discussed the Ma clique's activities in Gansu and Ningxia.