non-periodic phenomena

例句：

1. 1. The data is non-periodic, so it can't be predicted with certainty.
   数据是无周期性的，因此无法确定地预测。
2. 2.The weather patterns are non-periodic, meaning they change quickly and unpredictably.
   天气模式是非周期性的，意味着它们变化迅速且不可预测。
3. 3. The growth rate of the population is non-periodic, indicating a steady increase over time.
   人口增长率是非周期性的，表明随着时间的推移稳步增加。