erratic soil

例句：

1. 1. The erratic weather patterns havecaused a lot of problems for the farmers.
   不规则的天气模式给农民带来了很多问题。
2. 2. The erratic behavior of the animalsis causing concern among the scientists.
   动物的不规则行为让科学家们感到担忧。
3. 3. The erratic movements of the earth's crustare believed to be responsible for the earthquakes.
   地球板块的不规则运动被认为是地震的原因。