ADJ 斯拉夫语系的(包括俄语、捷克语、塞尔维亚-克罗地亚语等) Something that is Slavonic relates to East European languages such as Russian, Czech, and Serbo-Croat, or to the people who speak them. 斯拉夫语系的(包括俄语、捷克语、塞尔维亚-克罗地亚语等)
The Ukrainians speak a Slavonic language similar to Russian.