If you achieve a result by ~ of something, you achieve it by means of that thing. (WRITTEN)
He succeeds by ~ of sheer hard work...
= by means of
PREP-PHRASE
If you achieve a result by ~ of something, you achieve it by means of that thing. (WRITTEN)
He succeeds by ~ of sheer hard work...
= by means of
PREP-PHRASE
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012