具体化的用用语指向现实世界，且指向明确。

Concrete words refer to something in the real world and they refer to it precisely.

youdao

对症下药，提高公益广告效果的策略有三：真实再现、指向明确和对比联想。

Three strategies to raise the advertising effect are provided: vivid presentation, distinct referring, and comparative association.

youdao

Well, basically because it was a design choice when the creators of Python decided to create the language, they basically said, we're always going to have an explicit pointer to the instance.

好，基本上来说这是因为,这是当Python的创造者,决定创造这门语言的时候,的一个设计决定，他们主要的说了说，我们要有一个明确的,指向实例的指针。

麻省理工公开课 - 计算机科学及编程导论课程节选