慢速变化球

例句：

1. 1.The company is undergoing a slow-change in its business strategy.
   该公司正在经历业务策略的缓慢变革。
2. 2. Slow changes can lead to significant improvements over time.
   缓慢的变化可以随着时间的推移带来显著的改进。
3. 3. The slow-change of the weather patterns has been causing concern for many scientists.
   天气模式的缓慢变化已经引起了许多科学家的关注。