Many mysteries remain just out of reach such as whether there might be a link between Indo-European and other major language family and the nature of the languages spoken in Europe, prior to its arrival.
许多谜团已经无从知晓,像是印欧语和其他主要语系之间是否存在关联,或是在合格语言来到欧洲之前,他们都是说着什么语言
。