from: Universala Vortaro, Zamenhof
ellerni + + 
to master + + learn completely estri unu lingvon + + to master a language + + majstri + + to master + + potenci + + to master + + have power over exercise power over primajstri + + to master + + #ellerni #to master #estri unu lingvon #to master a language #majstri #to master #potenci #to master #primajstri #to master
