Lì shǐ / kè shàng / lǎo shī / xiáng xì / jiǎng jiě le / èr cì Gé mìng / de / bèi jǐng / hé / jīng guò

历史课上，老师详细讲解了二次革命的背景和经过。

In history class, the teacher explained the background and course of the Second Revolution in detail.