abstract/conceptual/theoretical.导航词义：抽象的

1. abstract:adj. 抽象的，纯理论的.强调抽象性。

Abstract ideas sometimes cannot match facts.

抽象概念有时会与事实不符。

It is difficult to read abstract theories.

抽象的理论很难读。

2. conceptual:adj. 概念（上）的，观念（上）的.强调概念性的。

This conceptual theory comes from practical experience.

这一概念性理论源于实践经验。

Only human beings have the ability to think conceptual thoughts.

只有人类才有概念思维的能力。

3. theoretical:adj. 理论的；理论上的.强调基于理论而非实践经验的。

He studies theoretical physics.

他在读理论物理。

He believes only theoretical science can create miracles.

他认为唯有理论科学才能创造奇迹。

全部

1·It's a theoretical possibility.

这是理论上存在的可能性。《牛津词典》

2·The course is essentially theoretical in orientation.

该课程的目标基本上是理论性的。《牛津词典》

3·There was undeniably a strong theoretical dimension to his thinking.

不可否认，他的想法很有理论深度。《柯林斯英汉双解大词典》

4·There is a time-lag between theoretical research and practical applications.

理论研究和实际应用之间存在时滞。《柯林斯英汉双解大词典》

5·This is certainly a theoretical risk but in practice there is seldom a problem.

这在理论上肯定有风险，但在实践中却很少出问题。《柯林斯英汉双解大词典》

6·The first year provides students with a sound theoretical basis for later study.

第一年为学生以后的学习奠定坚实的理论基础。《牛津词典》

7·So far, our discussions have all been theoretical.

到目前为止，我们的讨论都是理论性的。

8·Winning the Albert Einstein Award is the highest achievement in theoretical physics.

获得爱因斯坦奖是在理论物理学能达到的最高成就。

9·I'm very pleased to welcome Doctor Melissa Phillips, professor of theoretical physics.

我很高兴欢迎理论物理学教授 Melissa Phillips 博士。

10·Today, I'm very pleased to welcome Dr. Melissa Phillips, professor of theoretical physics.

今天，我很高兴地欢迎理论物理学教授梅丽莎·菲利普斯博士。

理论的

1·There was undeniably a strong theoretical dimension to his thinking.

不可否认，他的想法很有理论深度。《柯林斯英汉双解大词典》

2·There is a time-lag between theoretical research and practical applications.

理论研究和实际应用之间存在时滞。《柯林斯英汉双解大词典》

3·The first year provides students with a sound theoretical basis for later study.

第一年为学生以后的学习奠定坚实的理论基础。《牛津词典》

4·Winning the Albert Einstein Award is the highest achievement in theoretical physics.

获得爱因斯坦奖是在理论物理学能达到的最高成就。

5·I'm very pleased to welcome Doctor Melissa Phillips, professor of theoretical physics.

我很高兴欢迎理论物理学教授 Melissa Phillips 博士。

理论上的

1·This is certainly a theoretical risk but in practice there is seldom a problem.

这在理论上肯定有风险，但在实践中却很少出问题。《柯林斯英汉双解大词典》

2·Each of the four fundamental forces (gravity, electromagnetism, and the strong and weak nuclear forces) has a kind of theoretical knob.

四种基本力（万有引力、电磁力、强核力和弱核力）中的每一种都有一个理论上的旋钮。

3·The threat to his safety from Iraqis infuriated by these photos is not theoretical.

被那些照片激怒的伊拉克人对他的安全威胁并不是理论上的。

4·These risks are not merely theoretical.

这并不只是理论上的风险。

5·Some experts now think there may be no theoretical limit at all, pointing to the huge rise in the number of centenarians in the past few decades.

一些专家现在认为也许平均寿命根本没有理论上的限制，他们指出过去几十年中百岁老人的数量大大增加。

理论性的

1·So far, our discussions have all been theoretical.

到目前为止，我们的讨论都是理论性的。

2·If you are writing about literature, do not give your professor a plot summary; if you are writing about some kind of theory, do not give the main points of a theoretical essay you read for the class.

如果你写的是文学方面的文章，别给你的教授交一份故事情节概述；如果你写关于某种理论的文章，别给教授交一份你为了这门课程专门阅读过的某一篇理论性文章的要点。

3·Their conservation is not entirely theoretical: they swap stories about the experiments they perform in rudimentary labs built in their kitchens, basements and garages.

他们的交流不完全是理论性的：他们相互交流彼此在厨房，地下室和车库的简陋实验室进行实验的故事。

4·The books and course programs produced by the MCEO are not speculative nor theoretical in nature, but are rather derived from factual TEXT books.

MCEO制作的这些课程项目和书籍既不是猜想也不是纯理论性的假说，而是自真实的教材中衍生而来的。

5·I hope that the examples in this article have made clear the theoretical concepts outlined in the first article in this series.

我希望本文中的示例已经说明了这个系列第一篇文章中概述的理论性概念。

理论化的

1·Unless your physics specialty is deeply theoretical or has to do with astrophysics, you can usually find an industry job that is related to your work.

除非你的物理学专业极端理论化，或者是天体物理，否则你通常是可以在工业界找到一个相关的职位的。

2·Well, my father was very theoretical in his thinking and practical in his daily life….

嗯，我父亲思考问题很理论化，他在日常生活中非常喜欢实践。

3·Mathematics was a field he may have considered too theoretical to produce the direct practical benefits to mankind whose discoverers he sought to reward.

他可能认为数学是过于理论化，此领域的发现难以为人类产生直接的实际利益。

4·While his work on security and reliability is quite theoretical, his results are applicable to the development of reliable software.

尽管他在安全和可靠性方面的工作是比较理论化的，但是他获得的结果在可靠软件的开发中是可以应用的。

5·Unravelling institutions of the scale of ABN is complex: customers, employees and it systems will bleed messily across the neat theoretical divisions between consortium members.

要理顺规模如荷兰银行者的机构结构是一件复杂之事：如何分配客户、雇员和IT系统会在联盟成员间有序的理论化部门之间引起一片混乱。

(1)theoretical basis理论基础

(1)theoretical foundation理论基础

(1)theoretical model理论模型

(1)theoretical value理论值

(1)theoretical level理论水平

(1)theoretical physics理论物理