warfare

1. N-UNCOUNT Warfare is the activity of fighting a war. 作战; 战争

...the threat of chemical warfare. …化学战的威胁。

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

Much of the violence is related to drugs and gang warfare. 很多暴力行为都与毒品和帮派冲突有关。