Narcolepsy is a rare medical condition. It causes people who suffer from it to fall into a deep sleep at any time without any warning.
N-UNCOUNT
Narcolepsy is a rare medical condition. It causes people who suffer from it to fall into a deep sleep at any time without any warning.
N-UNCOUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012