英 [ˈræʃ(ə)nəl] 美 [ˈræʃ(ə)nəl]
adj. （想法、决定等）合理的，基于理性的；（人）理性的，理智的；富有理性的；（数）有理的，有理数的
n. 有理数
复数rationals
比较级more rational
最高级most rational
rational /ˈræʃənəl/ CET4 TEM4
形容词 Rational decisions and thoughts are based on reason rather than on emotion. 理性的
He's asking you to look at both sides of the case and come to a rational decision.
他是在要求你看到问题的两面，然后做出理性的决定。
副词 理性地
It can be very hard to think rationally when you're feeling so vulnerable and alone.
在你感到如此脆弱和孤单的时候很难理性地思考问题。
形容词 A rational person is someone who is sensible and is able to make decisions based on intelligent thinking rather than on emotion. 理智的
Did he come across as a sane, rational person?
他看上去是不是一个头脑清醒而理智的人？
an integer or a fraction
同义词： rational number
consistent with or based on or using reason
rational behavior ; a process of rational inference ; rational thought
of or associated with or requiring the use of the mind
the triumph of the rational over the animal side of man
同义词： intellectual / noetic
capable of being expressed as a quotient of integers
rational numbers
having its source in or being guided by the intellect (distinguished from experience or emotion)
a rational analysis
理性-引用次数：1562
Modern times,judicial remedy is the rational and legal way of remedies.
在现代法治社会,公力救济是理性、合法的救济途径。
合理-引用次数：1363
Fourthly, it brings forward rational suggestions to perfect administration litigation jurisdiction.
四、提升审判审级完善行政诉讼管辖的合理化建议。
参考来源行政诉讼级别管辖论（研究生论文）
理论基础-引用次数：54
Part one is to lay a theoretic foundation and offer a basis for rational allocation of civil execution power legislation.
第一部分是民事执行权的理论基础。
参考来源论民事执行权的配置（研究生论文）
理性-引用次数：252
These three kinds of rational analysis constitute the frame of the article.
以上三种理性分析法构成了本文的理论框架。
有理-引用次数：217
So rational parametric polynomial curve can be generated quickly.
因此，实现了有理参数曲线的快速生成。
参考来源参数曲线曲面的快速生成算法研究
意向删词-引用次数：4
And then we reseach the correlational validity of the four cloze. The results show that fixed ratio of different articles might measure different language ability and that both rational and multiple-choice examine globle language ability.
在此基础上，我们进一步探讨了这四种完形测试方法的效标关联效度，结果表明，不同文章中按固定频率删词的完形测验测的可能是不同的语言能力，意向删词完形测验和多项选择完形测验考察的是被试的综合语言能力。
有理-引用次数：167
Finally, the relation between integrals and the maximal rational Hd-submodule H （drat） of Hd is found .
最后,给出了积分与Hd的极大有理Hd-子模Hdrat的关系。
参考来源Hopf箭图与辫子Hopf代数
有理性的
合理的
理性的
29 博弈的基本要素：理性 假设参与者是自利的（Self-interested）或理性的 （Rational）：参与者知道自己的目标，了解自己行 动的限制或约束，以精心策划的方式选择自己的策 略，按照自己的标准做到最好。
... qualified及格的 rational有理性的 realistic实事求似的 ...
我们一直都是从"合理的"（rational）一词的具体运用入手，对表达以及具有言语能力和行为能力 前文关于论证理论的附论，应该说对我们暂时定义合理性概念会有些帮助。
豪杰有理(Rational)：意甲的诸多球队都留有巴乔的足迹，技术全面、意识敏锐，是曾有第一联赛美誉的代表性人物，烟上写上你的名字吸入肺中，只为那是...
rationalistic 理性主义的；纯理论的
rationally 理性地；讲道理地
rationale 基本原理；原理的阐述
ration 定量；口粮；配给量
rationality 合理性；合理的行动
rationalization 合理化
rationalism 理性主义；唯理主义
rationalisation 合理性（等于rationalization）
rationalist 理性主义者，唯理主义者
rationalize 实行合理化；作辩解；合理地思考
There is no rational explanation for his actions.
对他的所作所为无法作出合理的解释。
The decision was based on emotion rather than rational thought.
这个决定不是基于理性的思考而是基于感情作出的。
The alphabet might be more rational if all the vowels came first.
要是所有的元音都排在前面，字母表也许会更合理些。
"It is increasingly clear to this reporter that the only rational way out then will be to negotiate."
VOA : special.2009.08.16
He was seen as a sexual renegade out to destroy the conception of people as good and rational and pure beings.
他被认为是支持性本能论的,其观点试图毁掉,人是善良理性而又纯粹的这一概念。
心理学导论课程节选 : 耶鲁公开课
The natural hierarchy, then, seems to be a sort of hierarchy of intelligence or at least a hierarchy of the rational.
自然的阶级制度，似乎是一种智慧的阶级制度,或至少是理性的阶级制度。
政治哲学导论课程节选 : 耶鲁公开课
I firmly believe that business and just straight up rational business growth, profitable business growth and social impact are not mutually exclusive."
VOA : special.2011.07.29
I think trying to understand our world is a really complicated endeavor and it's important to have a sort of solid rational approach like science does."
VOA : special.2009.12.01
If people are purely rational, they should be equally apt to accept either bet.
Rational people should be free, and they should be responsible for taking care of themselves.
Another more rational explanation is that Iran threatened missile strikes only to keep oil prices high.
Rational是提供基于业界开放标准的工具、最佳方案和服务，用于开发商业应用和构建软件产品及系统，包括移动电话和医疗系统等设备使用的嵌入式软件。在IBM的帮助下，Rational将进一步提升软件开发能力，创造更多业务价值。有了它，企业在未来的On Demand（随需应变）时代中将拥有更快的反应、更有弹性的运营策略和更加明确的发展方向，从而取得更大成绩。