lì / shǐ / kè / shàng / lǎo / shī / xiáng / xì / jiǎng / jiě / le / Rì / é / Zhàn / zhēng / de / qǐ / yīn / hé / jié / guǒ

历史课上，老师详细讲解了日俄战争的起因和结果。

In history class, the teacher explained the causes and results of the Russo-Japanese War in detail.