lì / shǐ / kè / shàng / lǎo / shī / jiǎng / jiě / le / fù / shǔ / guó / zài / guó / jì / guān / xì / zhōng / de / dì / wèi

历史课上，老师讲解了附属国在国际关系中的地位。

In history class, the teacher explained the status of dependent states in international relations.