externally irregular point

例句：

1. 1. Theshape of the object is determined by its external irregular points.
   物体的形状由其外部不规则点决定。
2. 2. The scientist found an extrinsic irregular point in the data that could explain the phenomenon.
   科学家在数据中发现了一个外部不规则点，可以解释这一现象。
3. 3.The researcher proposed a model to describe the behavior of objects with extrinsic irregular points.
   研究者提出了一个模型来描述具有外部不规则点的物体的行为。