Dì / lǐ / lǎo / shī / zài / kè / táng / shàng / jiè / shào / le / Dōng / Miǎn / gāo / yuán / de / dì / xíng

地理老师在课堂上介绍了东缅高原的地形。

The geography teacher introduced the terrain of the Eastern Myanmar Plateau in class.