Kronos has had the same problem, just with Czech players.
1) Sorry but if i'm not mistaken czechs play with english clients? This makes them know all of the game mechanics in english.
2) czechs don't dub everything in movies, series and news reports in their own language like french, italians and spanish speakers do am i wrong? This really negatively affects english passive and active knowledge. Correct me if i'm wrong. I can speak french np though, but not everyone in europe.
Correct me if i'm being ignorant.