lǎo / shī / zài / jiǎng / jìn / dài / shǐ / shí / jiǎn / yào / jiè / shào / le / jiǎng / guì / zhàn / zhēng / de / qǐ / yīn / hé / jié / guǒ

老师在讲近代史时，简要介绍了蒋桂战争的起因和结果。

While teaching modern history, the teacher briefly introduced the causes and outcome of the Chiang–Guangxi War.