campaign/kæm'peɪn/

n. a series of activities in politics, business, etc. that are intended to achieve sth

n. [C] （政治、商业等的）运动：an election campaign 竞选运动

◇an advertising campaign 广告宣传运动

◇[campaign against/for sth] a campaign against public smoking 反对在公共场所吸烟的运动

构词camp（田野）+ aign→“古代士兵到野外训练”引申为“运动”