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theory noun
⇨ theory 1 (the theory of relativity) ⇨ theory 2 (I have this theory that…)theory1 noun the theory of relativity 相对论I have this theory that... 依我看⋯theory ♦︎ principle ♦︎ law ♦︎ rule ♦︎ theoremThese are all words for an idea or set of ideas that explains why sth happens or why sth exists. 这些词均表示学说、理论、原理。PATTERNS AND COLLOCATIONS 句型和搭配◆a theory / law / rule / theorem about sth◆the theory / principle behind sth◆in theory / principle◆the theory / principle / law / rule / theorem that...◆a basic / fundamental theory / principle / law / rule / theorem◆a mathematical theory / principle / law / rule / theorem◆a scientific theory / principle / law / rule◆to prove a theory / principle / law / rule / theorem◆to define a law / rule◆to apply a theory / principle◆a theory / principle / law / rule / theorem states that...■ theory [countable, uncountable] a formal set of ideas that is intended to explain why sth happens or exists; the ideas on which a particular subject is based 学说；理论◆There are conflicting theories as to the very early origins of mankind.关于人类最早的起源有些相互矛盾的理论。◆According to Einstein's theory of relativity, nothing can travel faster than light.根据爱因斯坦的相对论，任何东西都无法超越光速。◆He wrote a number of books on political theory.他撰写了几本政治理论方面的书。◆In theory, all children get an equal chance at school.从理论上讲，所有孩子在学校都能获得平等的机会。 see also theoretical ⇨ intellectual 1 ■ principle [countable, uncountable] an idea or theory that sth is based on; a general or scientific idea that explains how sth works or why sth happens 法则；原则；原理；定律◆The principle behind it is very simple.这背后的原理很简单。◆We must get back to first principles (= the basic principles of sth).我们必须回到根本原则上来。◆It is based on the principle that heat rises.这是基于热气上升的定律。◆A tidal current turbine is similar in principle to a windmill.潮流涡轮机从原理上和风车相似。 see also principle ⇨ principle 2 ■ law [countable] the fact that sth always happens in the same way in an activity or in nature; a scientific statement made by sb that explains a natural process 规律；法则；原理；定律◆The usual laws of supply and demand do not seem to apply in this case.一般的供求规律似乎不适用于这种情况。◆Do you remember anything about Ohm's Law?你还记得欧姆定律吗？ see also law ⇨ principle 2 ■ rule [countable] a statement of what is possible according to a particular system, for example the grammar of a language 规则；法则◆He's a writer who doesn't seem to know the most basic rules of English grammar.他这个作家似乎连最基本的英语语法规则都不知道。 see also rule ⇨ principle 2 ■ theorem /ˈθɪərəm; NAmE ˈθiːərəm, ˈθɪrəm/ [countable] (technical 术语) a rule or principle, especially in mathematics, that can be proved to be true （尤指数学）定理◆Work out the answer using Pythagoras's Theorem.运用毕达哥拉斯定理算出答案。 theory2 noun the theory of relativity 相对论I have this theory that... 依我看⋯theory ♦︎ hypothesis ♦︎ premise ♦︎ thesis ♦︎ propositionThese are all words for an idea that sb believes but that has not yet been proved, especially one used as the basis for another idea or proposal. 这些词均表示假说、假设，尤指可用作其他观点或提议基础的假定。PATTERNS AND COLLOCATIONS 句型和搭配◆a theory / hypothesis / thesis / proposition about sth◆a theory / hypothesis / thesis on sth◆a theory / hypothesis / premise / thesis / proposition that...◆to have a theory / hypothesis / premise / thesis◆to formulate a theory / hypothesis / thesis◆to support a theory / hypothesis / premise / thesis / proposition◆to test a theory / hypothesis / premise / proposition◆to prove a theory / hypothesis / thesis / proposition◆to be based on a theory / hypothesis / premise / thesis / proposition◆a theory / hypothesis / premise / thesis / proposition is based on sth■ theory [countable, uncountable] an opinion or idea that sb believes is true but that has not been proved （未经证明的）意见，看法；推测◆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。◆This is all theory so far...you'll need to back it up with facts.到目前为止，这都是推测，你需要用事实来印证。■ hypothesis / /haɪˈpɒθəsɪs; NAmE haɪˈpɑːθəsɪs/ (plural hypotheses /haɪˈpɒθəsiːz; NAmE haɪˈpɑːθəsiːz/ ) [countable] (rather formal) an idea or explanation of sth that is based on some known facts but has not yet been proved to be true or correct （有一定事实依据但未被证实的）假说，假设◆His hypothesis about what dreams mean provoked a lot of debate.他关于释梦的假说激起很多争论。◆This economic model is really a working hypothesis (= sth that people are using as if it were true or correct but which may yet be proved wrong).这个经济模型实际上是一个暂定的假说，以便展开分析。 see also hypothetical ⇨ supposed ■ premise /ˈpremɪs/ / [countable] (formal) a statement or idea that forms the basis for a reasonable theory 前提；假定◆The basic premise of this argument is deeply flawed.这一论据的基本前提有很大缺陷。◆The argument rests on a false premise.这个论点是以错误的前提为基础的。■ thesis / /ˈθiːsɪs/ / (plural theses / /ˈθiːsiːz/ / ) [countable] (rather formal) a statement or opinion that is discussed in a logical way and presented with evidence to prove that it is true 命题；论题◆The basic thesis of the book is fairly simple.这本书的基本观点相当简单。 see also thesis ⇨ paper ■ proposition /ˌprɒpəˈzɪʃn; NAmE ˌprɑːpəˈzɪʃn/ [countable] (formal) a statement that expresses an opinion, especially one used as the basis of an argument （尤指作为论证基础的）命题，主张，观点◆Her argument is based on the proposition that power corrupts.她的论证是建立在权力使人堕落的观点上。 |