yánjiū / Hánguó / lìshǐ / shí / bìxū / liǎojiě / Gāo lí cháo / de / zhèngzhì / zhìdù

研究韩国历史时，必须了解高丽朝的政治制度。

When studying Korean history, one must understand the political system of the Goryeo dynasty.