campaign

空军执行了一场持续的轰炸战役。

The air force conducted a sustained bombing ___campaign.

将军计划发动一场冬季军事行动，以突袭敌军。

The general planned a winter ___campaign to surprise the enemy forces.

许多非营利组织为争取动物权利和福利改革而发起运动。

Many non-profit organizations ___campaign for animal rights and welfare reforms.