色雷斯文化在古代巴尔干地区有着独特的影响。

___Thracian culture had a unique influence in the ancient Balkan region.

这位历史学家专门研究古代色雷斯人的文化习俗。

The historian specializes in studying the cultural practices of the ancient ___Thracians.

学者们正在研究已失传的古代色雷斯人语言。

Scholars are studying the extinct ___Thracian language of ancient people.