Poison gas is a gas that is poisonous and is usually used to kill people in war or to execute criminals.
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Poison gas is a gas that is poisonous and is usually used to kill people in war or to execute criminals.
N-UNCOUNT
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012