source: As such their exposure to the language and their level of fluency is likely to be limited compared to children who receive Welsh-medium education.
target: O’r herwydd, mae’n debygol bod eu hymwneud â’r iaith, ynghyd â lefel eu rhuglder, yn gyfyngedig o’u cymharu â phlant sy’n derbyn addysg cyfrwng Cymraeg.