peak stage

例句：

1. 1. The company's sales have reached their peak stage.
   该公司的销售已经达到了顶峰。
2. 2.During the peak stage of the project, we need to ensure all systems are working properly.
   在项目高峰期，我们需要确保所有系统都能正常工作。
3. 3. The economy is at its peak stage, with high growth rates and low unemployment rates.
   经济正处于高峰期，增长率高，失业率低。