ring fencing
保护、隔离或限制某些事物，以防止其受到外部影响或损害的行动或策略。
正式·财务或政策隔离
英文释义
setting apart or protecting specific resources, assets, or interests from being affected or used for other purposes or activities
例句
Ring fencing the budget ensures it's used for its intended purpose.
典故来源
同ring fence，强调隔离保护的动作或策略。