theory
n. 学说; 理论; 观点; 猜想
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。
Einstein formulated the Theory of Relativity in 1905.
爱因斯坦于 1905 年创立了相对论。
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。
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。
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。
...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
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。
1. 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;
2. a tentative theory about the natural world; a concept that is not yet verified but that if true would explain certain facts or phenomena;
3. a belief that can guide behavior;
in theory
理论上(应该);照道理
His experiment negatived the theory.
他的实验驳斥了这个理论.
Einstein's theory of relativity won for him universal esteem.
爱因斯坦的相对论赢得了全世界对他的崇敬.
Copernicus was terribly persecuted for his scientific theory.
哥白尼由于其科学理论而遭到严重的迫害.
The theory is of limited usefulness.
这个理论用途有限.
This theory was initially received with great scepticism by her fellow scientists.
她的科学界同行最初对这一理论持有强烈的怀疑态度.