(~s)
Earthworks are large structures of earth that have been built for defence, especially ones which were built a very long time ago.
N-COUNT: usu pl
(~s)
Earthworks are large structures of earth that have been built for defence, especially ones which were built a very long time ago.
N-COUNT: usu pl
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012