It is sometimes easier to illustrate an abstract concept by analogy with something concrete. He is good at explaining quite complex, abstract ideas in a nice simple way.

abstract： 指论文、书籍等正文前的内容摘要，尤指学术论文或法律文件的研究提要。 digest： 侧重对原文融汇贯通，重新谋篇布局，以简明扼要的语言，简短篇幅成文，展现原作精华。

在学术写作中，abstract特指研究论文的摘要，需包含研究问题、方法、结果与结论四要素，期刊论文摘要通常限定150-300字。

The verb abstract is used to mean “summarize,” as in “abstracting an academic paper.” This meaning is a figurative derivative of the verb’s meanings “to remove” or “to separate.”

Abstract（摘要）是对研究工作（研究论文）的简短总结。 Abstract简要地报告了研究目的和结果，以便读者能够快速而确切地知道这篇论文所描述的研究工作是关于什么的。

If a statement, argument, or discussion is abstract, it is general and not based on particular examples.

Sep 29, 2015 · A painting, drawing, or sculpture is described as abstract if it tries to represent the qualities of objects or people but does not show their outer appearance:

Abstraction is the process of generalizing rules and concepts from specific examples, literal (real or concrete) signifiers, first principles, or other methods. The result of the process, an …

Feb 28, 2019 · An abstract is a short summary of a longer work (such as a thesis, dissertation or research paper). The abstract concisely reports the aims and outcomes of your research, so …

2. abstract: Traditional Chinese Medicine, known as an ancient medical science is marked by its obscurity and difficulty in terms of theory.