数学中的集合论是一个高度抽象的概念。

Set theory in mathematics is a high level of ___abstraction.

在编程中，抽象能让我们专注于核心逻辑而忽略细节。

In programming, ___abstraction allows us to focus on core logic while ignoring details.

这幅抽象画用大胆的色彩和几何形状表达情感。

This ___abstraction uses bold colors and geometric shapes to convey emotion.