regression phase

例句：

1. 1.The company is in the regression phase of its recovery plan.
   公司正处于其复苏计划的回退阶段。
2. 2. During the regression phase, scientists are studying how to improve crop yields.
   在回退阶段，科学家们正在研究如何提高农作物产量。
3. 3.The project's progress has entered the regression phase, requiring more attention and resources.
   该项目的进展已经进入了回退阶段，需要更多的关注和资源。