Definition: a series of military attacks Level: C1
空军发动了一场持续的轰炸行动。
The air force launched a sustained bombing ___campaign.
历史学家们仍在研究亚历山大大帝的军事战役。
Historians still study the military ___campaign of Alexander the Great.
将军策划了一场决定性的战役，以期迅速结束冲突。
The general planned a decisive ___campaign to end the conflict quickly.
