abstraction of observed values

例句：

1. 1. The math teacher explained the abstract concept of calculus to us in a simple way.
   数学老师用简单的方式向我们解释了微积分这一抽象概念。
2. 2. In economics, abstraction is the process of removing specific details from a model to focus on the underlying principles.
   在经济学中，抽象是指从模型中去除具体细节，专注于基本原理的过程。
3. 3.The artist abstracted the imagery of nature into a series of geometric shapes.
   这位艺术家将自然界的景象抽象成一系列几何形状。