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TOEFL IELTS BNC: 3243 COCA: 4481

rational

Word family 
ra·tion·al /ˈræʃənəl/ ●●○ AWL adjectiveadj  
1  LOGICALrational thoughts, decisions etc are based on reasons rather than emotions 〔想法、决定等〕合理的，基于理性的 OPP irrational
 Parents need to be fully informed so they can make a rational decision.
父母需要充分了解情况，这样才可以作出合理的决定。
 I’m sure there’s a rational explanation for all this.
我相信这一切都有合理的解释。
 It’s impossible to have a rational conversation with him.
不可能和他进行理性的谈话。
2  SENSIBLEa rational person is able to think calmly and sensibly 〔人〕有理性的，理智的 OPP irrational
 Culley was quite rational at the time of her baby’s death.
卡莉在她孩子死去时相当理智。
3  formal able to make sensible judgments 能作出理智决定的，理性的
 Man is a rational animal.
人类是理性动物。
—rationally adverbadv
 We were too shocked to think rationally.
我们太过震惊，难以理智地思考。
—rationality /ˌræʃəˈnæləlti/ noun [uncountableU]
n COLLOCATIONS
nouns
a rational explanation
I told myself that there must be some simple, rational explanation.
a rational decision/choice
The patient was incapable of making a rational decision.
a rational approach
We must adopt a rational approach when dealing with this problem.
a rational analysis
Emotions are running so high that any rational analysis of the situation is difficult.
rational thought
Babies were thought to be incapable of rational thought.
rational argument
Nuclear weapons are so absurd that rational argument about their use is scarcely possible.
a rational conversation/discussion
Let's all calm down and have a rational discussion.
adverbs
perfectly rational
I'm sure there's a perfectly rational explanation.
Examples from the Corpus
rational• The talk was lively and, compared to Morrison's drivel, refreshingly rational.• Many of the patients have long histories of drug abuse, and they're not always rational.• People's behaviour isn't always purely rational.• Such beliefs serve to explain the system to its members: they make social inequality appear rational and reasonable.• We're looking for someone with a rational approach to dealing with problems.• rational behavior• From a rational choice perspective, you would be rather foolish to vote in a presidential election.• It should be seen as seven functional stages of the budgetary process which take place in a political or rational context.• Education helps us to make rational decisions.• Should they, then, be branded as spurious designators and banished from rational discourse?• There is no rational explanation for Melanie Hawkin's disappearance.• There must be some rational explanation for this apparently bizarre phenomenon.• Let's try and discuss this like two rational human beings.• How can a rational man be taken in by these arguments?• Consequently rational members of organizations are more likely to stay loyal and inactive than to be vocal participants.• There appears to be no rational motive for the attack.• Exactly how a rational person will solve it we shall show later on.• No rational person would have agreed to those terms.• Taking action to defend yourself is a completely rational reaction if you're being attacked.
rational explanation• In any case, Amiss's mind was racing, grappling with a situation devoid of any rational explanation.• The subsequent references by the deceased to £17,000 as the value of his portfolio were not the subject of any rational explanation.• Through their various plights, the drama questions a world where feminine ideals regularly defy rational explanation.• There was a rational explanation for all this and, when Carol arrived, he'd discover what it was.• This is the mystery of sin which has no rational explanation, for it is ultimately and radically inexplicable.• Only now have scientists begun to offer rational explanations for this phenomenon.• Either way, there has to be some rational explanation of Clinton's conduct.• I told myself that there must be some simple, rational explanation, something Illingworth had overlooked.
Origin rational
(1300-1400) Latin rationalis, from ratio; → RATIO
ra·tion·al adjectiveadj →n COLLOCATIONS1
LDOCE Online
Chinese
Syllable
Corpus
TOEFL IELTS BNC: 3243 COCA: 4481
rational

adjective

VERBS | ADVERB | PREPOSITION VERBS➤be, seem合理；好像合理◇It all seemed quite rational to me.在我看來這似乎全都合情合理。ADVERB➤highly, very很合理；非常理智▸➤completely, eminently (formal) , entirely, fully, perfectly, quite完全合理；非常合理；十分理智；相當理智◇At the time she was perfectly rational.當時她是十分理智的。➤purely, strictly純粹理性▸➤essentially本質上理性◇Humans are essentially rational beings.人在本質上是理性動物。➤apparently顯得合理▸➤economically經濟上合理◇With children working from the age of ten, large families were economically rational.孩子從 10 歲就開始工作，多要幾個孩子在經濟上考慮是合乎情理的。PREPOSITION➤about對⋯理智◇Try to be rational about it.盡量理智地對待這件事。
TOEFL IELTS BNC: 3243 COCA: 4481
rational adj.
⇨ rational (a rational argument) ⇨ sane (a rational man) rational

adjective

  ➡ See also the entry for good 3 另见good条第3义rational ♦︎ coherent ♦︎ logical ♦︎ scientific ♦︎ reasonedThese words all describe behaviour or a way of thinking that is based on reason, facts and clear, careful thought. 这些词均表示行为或思维方式合理的、理性的、明智的。PATTERNS AND COLLOCATIONS 句型和搭配◆to be rational / scientific about sth◆a rational / coherent / logical / scientific / reasoned argument / explanation◆rational / coherent / logical / scientific / reasoned thought◆a rational / coherent / logical / scientific approach◆a rational / logical / scientific / reasoned choice / decision / conclusion◆rational / logical / scientific / reasoned thinking◆perfectly rational / coherent / logical■ rational ˈræʃnəl (of behaviour or a way of thinking) based on reason and facts rather than emotions （行为或思维方式）合理的，理性的，明智的◆There's no rational explanation for his actions.对他的所作所为无法作出合理的解释。◆In some ways their behaviour is perfectly rational.在某种程度上他们的行为完全合理。OPP irrational ⇨ irrational   see also rationality ⇨ logic ▸ rationally

adverb

◆Scientific training helps you to think rationally.科学的训练有助于理性思考。■ coherent kəʊˈhɪərənt; NAmE koʊˈhɪrənt(of an idea, system or explanation) rational and well-organized; clear and easy to understand （思想、体系或解释）合理的，有条理的，清楚易懂的◆She gave a clear, coherent account to the court.她向法庭作了清楚合理的陈述。◆They have yet to come up with a coherent policy on this issue.在这个问题上，他们还没有提出协调一致的政策。ⓘ Coherent is used especially to talk about plans and organization; typical collocates include approach, framework, pattern, picture, plan, policy, programme, scheme, strategy, structure, system, theory and whole. * coherent尤用于修饰计划和组织机构，常见搭配词有approach、framework、pattern、picture、plan、policy、programme、scheme、strategy、structure、system、theory和whole。 OPP incoherent ⇨ confused 2   see also coherence ⇨ efficiency ■ logical based on the rules of logic; showing clear thinking based on facts and reason 符合逻辑的；合乎情理的；合乎常理的◆The problem can be solved using a process of logical reasoning.这个问题可以通过逻辑推理得到解答。◆A contradiction is a logical impossibility.矛盾是指在逻辑上不可能的事。OPP illogical ⇨ irrational   see also logic ⇨ logic ▸ logically

adverb

◆If you look at it logically his argument makes no sense.如果从逻辑角度看，他的论点不成立。■ scientific (of a way of doing sth or thinking) careful and logical （做事或思考的方法）细致严谨的，科学的◆He took a very scientific approach to management.他采取了一种非常科学的管理方法。◆We need to be more scientific about this problem.在这个问题上我们需要更加严谨。 OPP unscientific ⇨ irrational ▸ scientifically

adverb

◆We should try to approach this scientifically.我们应该努力科学地处理这事。■ reasoned [only before noun](of an argument or opinion) presented in a logical way that shows careful thought （论点或观点）合乎逻辑的，缜密的◆They refused the appeal without offering any reasoned argument.他们拒绝受理这一申诉，没有给出任何合理的理由。  see also reason ⇨ reason noun , reason ⇨ conclude verb , reasoning ⇨ reasoning
TOEFL IELTS BNC: 3243 COCA: 4481
rational
Sensible and reasonable: practical, sensible, rational...

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