A recent book has demolished this theory.
最近出版的一本书推翻了这种理论。
It was a theory unsupported by evidence.
这是一条没有证据支持的理论。
It's only a theory, admittedly, but the pieces fit together.
得承认这只是一种理论，但其各部分自成一体。
The article advances a new theory to explain changes in the climate.
这篇文章提出了一个解释气候变化的新理论。
Last night a top criminal psychologist cast doubt on the theory.
昨晚，一位顶级的犯罪心理学家让人对该理论生疑。
At the moment it is only a theory.
眼下，它还只是个理论而已。
Scientists have a fairly negative attitude to the theory.
科学家对这个理论的态度是相当消极的。
There was a theory that he wanted to marry her.
有种观点认为他想娶她。
A theory of pure design; harmony, balance, rhythm is another learning library must add.
《纯设计理论：和谐、平衡、韵律》是另一本必须收藏的书籍。
In other words, you need a theory of value.
换句话说，你需要知道价值评估的理论。
不是一种理论。
"This is a theory," he emphasizes.
“这只是一种理论，”罗津强调说。
His belief was that a theory should serve as a stimulus to further creative thinking.
他的信念是一个理论应该能够激发进一步的，创造性的思考。
Mere lack of evidence, of course, is no reason to denounce a theory.
当然，仅仅是缺乏证据不是反对一个理论的根据。
Yes, evolution is a theory, but a theory supported by an enormous body of evidence.
是的，进化论虽是一个理论，可是这个理论已为大量的证据所证实。
What's more, they proposed a theory as to what these ripples might be.
并且，他们推测出一个关于这些痕迹应该是什么的理论。
There are two ways you could reject a theory.
你可以在两种情况下拒绝接受一个理论。
But there's a different problem a theory could have.
但一个理论还可能会存在其他方面的问题。
In science, a theory is a reasonable explanation of observed events that are related.
在科学中，理论是对所观察到的相关事件的合理解释。
The antidepressant theory is just that — a theory.
抗抑郁剂理论只是一个理论。
I'd love to see a theory of change for this contest. Perhaps it exists.
我想看到关于该竞赛的变革理论，或许该理论已经存在。
Now some people call that a theory of everything.
现在有些人称之为万有理论。
The concept of a shadow biosphere, according to Professor Davies, "is still just a theory".
“阴影生物圈”的概念，戴维斯教授说，“只是一个理论而已。”
He’s presenting a theory and, in his conclusion, he treats his theory as fact. . . .
他在结论中抛出一个理论，他把这个理论看做事实……
And here's a theory, "well, then, I'll begin to take it seriously as an explanation."
这里还有一套理论，好吧，这样的话我会认真考虑这种解释。
Professor Rutherford has given a theory of the structure of atoms.
卢瑟福教授给出，原子结构的理论。
All right, so anyways, so all right we have a theory.
好了，无论如何，我们有了一个理论。
It is a theory that has always been cherished by the rich.
这样一种理论当然被富人奉若至宝。
That's still just a theory, however. But it brings us to our next entry...
然而，这还只是一种理论。
我有一套关于这个的理论。
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