(~s)
An ~ is a special bicycle which does not move, so that you can exercise on it at home or at a gym.
N-COUNT
(~s)
An ~ is a special bicycle which does not move, so that you can exercise on it at home or at a gym.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012