“大幅度裁减或削减”可以翻译为 “drastically cut back on” 或 “significantly reduce/slash” 。
“drastically cut back on” 强调大幅、激烈地削减， “drastically” 突出程度之深，“cut back on” 表示减少、削减（某事物） 。例如：The company decided to drastically cut back on its workforce to save costs.（公司决定大幅度裁减员工以节省成本。 ）
“significantly reduce” 侧重于显著地、可观地减少数量、规模等 ； “significantly slash” 中 “slash” 有大幅度削减、砍价等意思，“significantly slash” 同样表达大幅削减。例如：We need to significantly reduce our expenses this month.（这个月我们需要大幅削减开支。 ） ；The government plans to significantly slash the budget for this project.（政府计划大幅削减这个项目的预算。 ）