Acetylene is a colourless gas which burns with a very hot bright flame. It is often used in lamps and for cutting and welding metal.
N-UNCOUNT: oft N n
Acetylene is a colourless gas which burns with a very hot bright flame. It is often used in lamps and for cutting and welding metal.
N-UNCOUNT: oft N n
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012