theorynoun
学说；论；说
a formal set of ideas that is intended to explain why sth happens or exists
According to the theory of relativity, nothing can travel faster than light.
根据相对论，任何东西都无法超越光速。
理论；原理；原则
the principles on which a particular subject is based
the theory and practice of language teaching
语言教学理论与实践
（未证明的）意见；看法；推测
an opinion or idea that sb believes is true but that is not proved
I have this theory that most people prefer being at work to being at home.
依我看，多数人喜欢工作而不愿待在家里。
used to say that a particular statement is supposed to be true but may in fact be wrong
从理论上讲，这些机器应能用十年以上。
In theory, these machines should last for ten years or more.
That sounds fine in theory, but have you really thought it through?
这话听起来很有道理，但是你真正全面考虑过没有？
theory
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1
N-VAR 理论;学说
A theory is a formal idea or set of ideas that is intended to explain something.Marx produced a new theory about historical change based upon conflict between competing groups...
马克思创立了一种新理论，认为历史的演变是基于对立集团之间的冲突之上的。
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2
N-COUNT 观点;见解
If you have a theory about something, you have your own opinion about it which you cannot prove but which you think is true.There was a theory that he wanted to marry her...
有人认为他想娶她。
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3
N-UNCOUNT (实践科目、技能的)理论基础
The theory of a practical subject or skill is the set of rules and principles that form the basis of it.He taught us music theory.
他教我们乐理。
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4
PHRASE 从理论上说;照理说
You use in theory to say that although something is supposed to be true or to happen in the way stated, it may not in fact be true or happen in that way.A school dental service exists in theory, but in practice, there are few dentists to work in them.
照理说，学校也有牙医诊所，可实际上，里面的牙医寥寥无几。
noun
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1
- a tentative insight into the natural world;a concept that is not yet verified but that if true would explain certain facts or phenomena
- a scientific hypothesis that survives experimental testing becomes a scientific theory
- he proposed a fresh theory of alkalis that later was accepted in chemical practices
- Synonym: hypothesis possibility
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2
- a belief that can guide behavior
- the architect has a theory that more is less
- they killed him on the theory that dead men tell no tales
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3
- a well-substantiated explanation of some aspect of the natural world;an organized system of accepted knowledge that applies in a variety of circumstances to explain a specific set of phenomena
- theories can incorporate facts and laws and tested hypotheses
- true in fact and theory
数据来源：WordNet
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This ridiculous theory is based on a series of wrong assumptions .
这一荒诞的学说是以一系列错误的设想为依据的。
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His theory has proved durable .
他的学说已经证明是经得起时间考验的。
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The theory seems to have no basis in fact .
这一理论似乎没有事实根据。
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We found further scientific evidence for this theory .
我们找到了进一步证实这种理论的科学根据。
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The article advances a new theory to explain changes in the climate .
这篇文章提出了一个解释气候变化的新理论。
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In theory , these machines should last for ten years or more .
从理论上讲，这些机器应能用十年以上。
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The statistics offer further support for our theory .
这些统计数字为我们的理论提供了进一步的依据。
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His book explains the theory for the lay public .
他的书为大众阐明了这个理论。
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The theory has been superseded by more recent research .
这一理论已为新近的研究所取代。
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I have this theory that most people prefer being at work to being at home .
依我看，多数人喜欢工作而不愿待在家里。
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The comparison shows considerable disagreement between theory and practice .
这一对比表明理论和实践之间有相当大的出入。
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I accept his theories , but not without certain qualifications .
我接受他的理论，但并非毫无保留。
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And that 's where the theory falls down .
这就是该理论的不足之处。
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Scientists have a fairly negative attitude to the theory .
科学家对这个理论的态度是相当消极的。
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That sounds fine in theory , but have you really thought it through ?
这话听起来很有道理，但是你真正全面考虑过没有？
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Your theory does not square with the facts .
你的理论与事实不符。
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What are you basing this theory on ?
你这种理论的根据是什么？
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His theories mesh together various political and religious beliefs .
他的理论把各种政治和宗教信仰完美地结合起来了。
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According to the theory of relativity , nothing can travel faster than light .
根据相对论，任何东西都无法超越光速。
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There is only fragmentary evidence to support this theory .
只有零零星星的证据证实这个理论。
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This latest evidence lends support to her theory .
这一最新的证据更加印证了她的理论。
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The course teaches you the theory but there 's no substitute for practical experience .
这门课教的是理论，但没有任何东西能代替实践经验。
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A recent book has demolished this theory .
最近出版的一本书推翻了这种理论。
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His theories are open to dispute .
他的理论值得商榷。
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The facts certainly fit your theory .
这些事实和你的说法丝毫不差。
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His theories have been debunked by recent research .
最近的研究揭穿了他的理论的真相。
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His theories are somewhat remote from reality .
他的理论有点儿脱离现实。
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This theory can be confirmed experimentally .
这种理论可通过实验得到证实。
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The theory does not apply universally .
这个理论并非放之四海而皆准。
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The theories were demonstrated to be false .
这些理论已被证明是错误的。
- 词语搭配
- 习语