Question

abstraction
ab.strac.tion  AHD[²b-str²k“sh…n, …b-]   DJ[#b6str#k.*n, *b-]  KK[#b6str#k.*n, *b-]
n.（名词）
1.The act or process of abstracting or the state of having been abstracted.
    抽象：进行抽象的行为或过程或是被抽象化的状态
2.An abstract concept, idea, or term.
    抽象概念，抽象术语：抽象的观念、意识或术语
3.An abstract quality.
    抽象性
4.Preoccupation; absent-mindedness.
    心不在焉；不在意
5.An abstract work of art.
    抽象的艺术作品