由于已经习惯于使用我们熟悉的数学抽象进行工作，我们常常会忘记这一点。

Being so familiar with the mathematical abstractions we are used working with, we tend to forget this.

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本文论述了数学抽象的特点，探讨了如何培养数学抽象能力的问题。

This paper discusses the characteristics of mathematical abstraction, and considers how to train the ability of mathematical abstraction in mathematics teaching.

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网络是现实系统的数学抽象，自然界中存在的大量复杂系统都可以通过网络加以描述。

The network is abstract model of realistic system. Many complex systems which exist in nature will be described by networks.

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This is an abstract and powerful mathematical statement of the first law of thermodynamics.

这是热力学第一定律的一个抽象,而且具有很强数学性的表述。

麻省理工公开课 - 热力学与动力学课程节选

And I think that's very important especially with electromagnetism, which is so numb toward if, so abstract and so much math flowing around.

我觉得这是非常重要的,尤其是对于电磁学来说，它是一门很难懂的，很抽象的学科,包含很多数学在里面。

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So literary can sometimes be very abstract like mathematics, and therefore, if someone says make me a movie, showing me what the square of minus two means that is going to be a challenge.

文学有时候也可以很抽象,像数学，因此如果有人说,给我做一部电影吧,给我展示一下负二的平方,那将是一个挑战。

麻省理工公开课 - 电影哲学课程节选