to talk about sb/sth for a long time, especially in a boring or complaining way :
He went on and on about how poor he was.
She does go on sometimes!
to talk about sb/sth for a long time, especially in a boring or complaining way :
He went on and on about how poor he was.
She does go on sometimes!
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005