| 例句 |
theorem noun
⇨ theory 1theory1 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。 |