(~s)
A ~ is a unit of energy that is equal to the energy provided by a thousand watts in one hour.
N-COUNT
(~s)
A ~ is a unit of energy that is equal to the energy provided by a thousand watts in one hour.
N-COUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012