destructive activities

例句：

1. 1. The fire was so intense that itdestroyed the entire building.
   这场火灾非常猛烈，以至于整个建筑都被摧毁了。
2. 2. Thescientist's research was deemed destructive to public health.
   科学家的研究被认为是对公共卫生有害的。
3. 3. The company's decisionto cut costs led to a destructive spiral of layoffs.
   公司决定削减成本导致了一场裁员的恶性循环。