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theory

US [ˈθiəri]
UK [ˈθɪəri]
  • n.理论;原理;学说;原则
  • Web推测;意见;见解
Plural Form:theories  
Theory
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n.
1.
[c][u]
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。
2.
[u]
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
3.
[c]
~ (that…)
(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。

Sample Sentence

Definition:
Category:AllAll,OralOral,WrittenWritten,TitleTitle,TechnicalTechnical
Source:AllAll,DictionaryDictionary,WebWeb
Difficulty:AllAll,EasyEasy,MiddleMiddle,HardHard
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