warfare

1. N-UNCOUNT Warfare is the activity of fighting a war. 作戰; 戰爭

...the threat of chemical warfare. …化學戰的威脇。

2. N-UNCOUNT Warfare is sometimes used to refer to any violent struggle or conflict. 打鬭; 沖突

Much of the violence is related to drugs and gang warfare. 很多暴力行爲都與毒品和幫派沖突有關。