irregular powder

例句：

1. 1. The weather forecast is irregular, so we should prepare for the possibility of rain.
   天气预报不规律，所以我们应该为下雨的可能性做好准备。
2. 2. The pattern of the stars in the sky is irregular, which makes it difficult to predict the future.
   天空中星星的排列是不规律的，这使得预测未来变得困难。
3. 3.The irregular growth pattern of the plant is a result of its natural adaptation to the environment.
   植物不规则的生长模式是其自然适应环境的结果。