2 sentences

1. 古埃及是世界四大文明古国之一。

   Gǔ'āi​jí shì shì​jiè sì dà wén​míng gǔ​guó zhī​yī.

   Ancient Egypt is one of the four great ancient civilizations of the world.

   Source: Dong Chinese Dictionary

2. 龟兹是古丝绸之路上的一个重要古国。

   qiū cí shì gǔ sī​chóu zhī lù shàng de yī gè zhòng​yào gǔ​guó.

   Kucha was an important ancient kingdom on the Silk Road.

   Source: Dong Chinese Dictionary