theories

英 [ˈθɪəriz]

美 [ˈθɪriz]

n.  学说; 论; 说; 理论; 原理; 原则; (未证明的)意见; 看法; 推测
theory的复数

柯林斯词典

• N-VAR 理论;学说
  Atheoryis a formal idea or set of ideas that is intended to explain something.
  1. 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。
  2. Einstein formulated the Theory of Relativity in 1905.
     爱因斯坦于 1905 年创立了相对论。
• N-COUNT 观点;见解
  If you have atheoryabout something, you have your own opinion about it which you cannot prove but which you think is true.
  1. There was a theory that he wanted to marry her...
     有人认为他想娶她。
  2. My theory about divorce is that it's not the split-up that damages children, it's how it is handled.
     我对离婚的看法是，伤害孩子的不是婚姻的破裂，而是处理离婚的方式。
• N-UNCOUNT (实践科目、技能的)理论基础
  Thetheoryof a practical subject or skill is the set of rules and principles that form the basis of it.
  1. He taught us music theory.
     他教我们乐理。
  2. ...graduates who are well-trained in both the theory and practice of statistics.
     在统计学理论和实践两方面都训练有素的毕业生
• PHRASE 从理论上说;照理说
  You usein theoryto 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.
  1. 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。

双语例句

• Many theories have been advanced as to why some women suffer from depression
  就一些女性患抑郁症的原因，各种说法纷至沓来。
• These two theories described virtually all physical phenomena that had been studied then.
  这两个理论实质上描述了所有当时已研究过的物理现象。
• Physics is the best example of a science which has developed strong, abstract theories.
  物理学是自然科学中发展出了强有力的抽象理论的最好例子。
• The knowledge base of the project is formed on theories connected with working conditions and the quality of working life and empirical researches.
  这个项目的理论基础由关于工作条件和工作质量的理论以及经验调查组成。
• The two scientists stopped working together because their theories did not conform.
  这两位科学家理论不一致，因此停止了合作。
• We will then have a firmer foundation of fact on which to build theories
  那样我们将会获得一个建立理论所需的更为牢固的事实基础。
• We shall use it as a yardstick in the following brief survey of the theories of static fatigue.
  我们在下面的静态疲劳理论的主要研究中将用它作为一个衡量的尺度。
• Many theories on punishment exist, all of which are variations on a theme.
  关于惩罚的理论有很多，虽形式略有不同，但其主旨都是一样的。
• This highlights a problem faced by people proposing theories of ball lightning
  这使得球状闪电理论的提出者所面临的一个问题凸显出来。
• There is no end to searching into philosophical theories.
  对哲理的钩玄永无止境。