владеть языком страны пребывания(CNN; контекстуальный перевод на русс. язык; e.g., there was no shortage of persons who had the language, contacts and local knowledge to survive in the UK Alex_Odeychuk)
владеть иностранным языком(CNN; e.g., there was no shortage of persons who had the language, contacts and local knowledge to survive in the UK Alex_Odeychuk)