斯拉夫语

yī dàn zhǎng wò é yǔ nǐ huò xǔ jiù kě yǐ hé shuō sī lā fū yǔ de rén jiāo liú

一旦掌握俄语，你或许就可以和说斯拉夫语的人交流。

Once you have Russian you can probably communicate with other Slav speakers.