Due to budget overruns, the team had to jettison the expensive advertising campaign.

### 解释 jettison 是动词，原指飞机或船只为了减轻重量而"抛弃货物或燃料"，引申为"放弃、舍弃"不必要或负担过重的事物。这个词来自航海术语，现在常用于商业和管理领域表示战略性放弃。