(~s)
If you talk about a ~ people or things, you are emphasizing that there is an extremely large number of them. (INFORMAL)
It’s been a ~ years since I’ve seen her.
NUM emphasis
(~s)
If you talk about a ~ people or things, you are emphasizing that there is an extremely large number of them. (INFORMAL)
It’s been a ~ years since I’ve seen her.
NUM emphasis
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012