Install apertium-mk-bg by entering the following commands in the terminal:
sudo apt update sudo apt install apertium-mk-bg
Description:
Apertium translation data for the Macedonian-Bulgarian pair
Data package providing Apertium language resources for translating between the Macedonian and Bulgarian languages.
Homepage: http://apertium.org/
Version: 0.2.0~r49489-1
Section: universe/science