Bitumen is a black sticky substance which is obtained from tar or petrol and is used in making roads.
N-UNCOUNT
Bitumen is a black sticky substance which is obtained from tar or petrol and is used in making roads.
N-UNCOUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012