If you say that something grinds on, you disapprove of the fact that it continues to happen in the same way for a long time.
Civil war in the Sudan has been grinding on for nine years.
PHRASAL VERB: V P disapproval
If you say that something grinds on, you disapprove of the fact that it continues to happen in the same way for a long time.
Civil war in the Sudan has been grinding on for nine years.
PHRASAL VERB: V P disapproval
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012