Or Russian slang or Russian acronyms ...
Its always slang that trips up the best MT software today. Human speech is complex and full of subtleties and meanings that a computer which is used to literal translation rules, can’t make sense of.
Its more complex than simply building a translation off a probability rule database because if you don’t understand the meaning as well the structure of what a foreign speaker says, its going to inevitably come out wrong even if it is grammatically correct.
BLYAT!