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单词 theory
释义
theory
noun[CorU]
uk
/ˈθɪə.ri/us
/ˈθɪr.i/
B2
aformalstatementof theruleson which asubjectofstudyisbasedor ofideasthat aresuggestedtoexplainafactoreventor, moregenerally, anopinionorexplanation:
理论；学说；意见
economictheory经济理论
scientifictheory科学理论
Darwin's theoryofevolution达尔文的进化论
Hehasa theorythattheholewascausedby ameteorite.他认为那个洞是陨石坠落形成的。
Thesaurus: synonyms, antonyms, and examples
an idea
  • ideaI've got an idea - why don't we ask John for help?
  • planThe plan is to hire a car when we get there.
  • thoughtHave you had any thoughts on presents for your mother?
  • suggestionHave you got any suggestions for improvements?
  • brainwaveUKI wasn't sure what to do and then I had brainwave - I could ask Anna for help.
  • brainstormUSShe was stuck until she had a brainstorm and the solution came to her.
See more results »
in theory
B2
If something ispossiblein theory, it should bepossible, but often it does nothappenin that way:
理论上，从理论上讲
In theory, thejourneyshould take threehours, but inpracticeit usuallytakesfour because ofroadworks.按理说行程应该只要3小时，但由于道路施工，实际上通常会需要4小时。
More examples
  • It was Ptolemy whopropoundedthe theory that theearthwas at thecentreof theuniverse.
  • This newevidencelendssupportto the theory that she wasmurdered.
  • Thisresearchseemsto give somevalidityto the theory that thedrugmightcausecancer.
  • InJungiantheory, there arecertainarchetypesofhumanpersonality.
  • In theory, women can still havechildrenat theageof 50.
SMART Vocabulary: related words and phrases
Philosophy
  • aesthete
  • aesthetic
  • aesthetically
  • anthropocentric
  • anthropocentrism
  • epistemology
  • essentialism
  • existential
  • existentialism
  • existentialist
  • non-philosophical
  • notional
  • ontological
  • ontology
  • Parkinson's law
  • spatio-temporal
  • superorganic
  • syllogism
  • syllogistic
  • symbolism
See more results »

You can also find related words, phrases, and synonyms in the topics:

Ideas, concepts and theories
Logic and reason
(Definition oftheoryfrom theCambridge Advanced Learner's Dictionary & Thesaurus© Cambridge University Press)

theory| American Dictionary

theory
noun[C/U]
us
/ˈθɪər·i,ˈθi·ə·ri/
somethingsuggestedas areasonableexplanationforfacts, acondition, or anevent,esp. asystematicorscientificexplanation:
[U]Adele took acourseinmodernpoliticaltheory.
[C]I have a theory(= anopinion)about why everybody in thecityis in such ahurry.

Idiom

in theory
(Definition oftheoryfrom theCambridge Academic Content Dictionary© Cambridge University Press)

theory| Business English

theory
noun
uk
/ˈθɪəri/us
pluraltheories
[CorU]
aformalstatementofideasthat aresuggestedtoexplainafactorevent, or how somethingworks:
He has four theories toexplainorganizationalchangeanddevelopment.
economic/political theoryEconomic theory says that there is littleconnectionbetween the euro'svalueagainst thedollaror theyenand thesuccessofmonetaryunionitself.
a theory of sthIn thisarticletheauthorsdevelopa theory of high-performingorganizations.
[CorU]
aformalstatementof therulesorprincipleson which anactivityor asubjectofstudyisbased:
management/organization theoryThiscasestudyhasimportantimplicationsformanagementtheory
thetheory andpracticeofrunningadepartment
[C]
astatementof anopinionor anexplanationof anideathat isbelievedto betrue, but might bewrong:
The theory isthatstaffreactbettertopraisethan tocriticism.
People willbuytheproductif you put it in therightplace- well,that's the theoryanyway.
in theory
if something ispossiblein theory, it should bepossible, but often it does nothappenin that way:
In theory, you can be up andtradingin a just aday.
Employing fewerpeoplesoundsgreatin theory, but how's it going toworkout inpractice?

See also

content theory
economic theory
expectancy theory
Elliott wave theory
employment theory
game theory
Herzberg's two-factor theory
monetary theory
organizational theory
price theory
View all
queuing theory
(Definition oftheoryfrom theCambridge Business English Dictionary© Cambridge University Press)

Examplesoftheory

theory
Does the autistic child have a "theoryof mind"?
From theCambridge English Corpus
It istheorytested by many individual research findings that permits the generation of predictions about program outcomes under different conditions.
From theCambridge English Corpus
Intheory, village development plans flow up through district and regional development committees to the central government.
From theCambridge English Corpus
Ethnographic theories are situated inbetween qualitative categories and narrative satisfaction.
From theCambridge English Corpus
All of this is ordinary in the realm of current knowledge-based systemtheoryand can be found, in many variations, in the literature.
From theCambridge English Corpus
The psychologicaltheoryis based on the philosophical premises.
From theCambridge English Corpus
From being purely historical and documentary, they are now turning towards an interest intheory.
From theCambridge English Corpus
But it would prove impossible to deduce a physicaltheoryfrom such purely formal theorems.
From theCambridge English Corpus
But the idea of an ageless self is also supported by developmental psychological theories, where the development after adolescence is seldom considered.
From theCambridge English Corpus
Page also correctly notes that localist representations not only can yield insightful and interpretable psychological theories, but neurally plausible theories as well.
From theCambridge English Corpus
We do not understand the notion of a "psychological"theorythat is "nonindividualistic"; the individual organism is psychology's focal level of analysis.
From theCambridge English Corpus
Using reflective practice to link personal and public theories.
From theCambridge English Corpus
Distributed representations of structure : atheoryof analogical access and mapping.
From theCambridge English Corpus
In this commentary we raise two issues that we think are directly related to the theory's treatment of mental representations as emulations.
From theCambridge English Corpus
In categorytheory, non-determinism and probability are represented by suitable monads.
From theCambridge English Corpus
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.

Collocationswiththeory

theory

These are words often used in combination withtheory.

Click on a collocation to see more examples of it.

abstract theory
Incompressible dynamics provide an interesting test of the abstract theory.
From theCambridge English Corpus
accepted theory
Perhaps for this reason, no generallyacceptedtheoryhas emerged.
From theCambridge English Corpus
alternate theory
In the alternate theory, the changes in the representation are compensated for by corresponding changes in the process.
From theCambridge English Corpus
These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
#https://dictionary.cambridge.org//dictionary/english/theory##
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更新时间：2024/12/27 14:58:58