You can refer to fighting between two countries or groups who are at war as ~. (FORMAL)
The authorities have urged people to stock up on fuel in case ~ break out.
N-PLURAL
You can refer to fighting between two countries or groups who are at war as ~. (FORMAL)
The authorities have urged people to stock up on fuel in case ~ break out.
N-PLURAL
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012