periodic performance report

例句：

1. 1. The cycle of the moon repeats every 29.5 days.
   月亮的周期每29.5天重复一次。
2. 2. The weather is cyclical, with warm and cold periods alternating.
   天气是周期性的，温暖和寒冷的时期交替出现。
3. 3.The production process follows a regular pattern, with each step having a specific time frame.
   生产过程遵循一个常规的模式，每个步骤都有特定的时间框架。