科学家们不知道恐龙为何灭绝，但一些理论假定这与地理气候条件和海平面的某些变化有关。

Scientists do not know why dinosaurs became extinct, but some theories postulate that changes in geography, climate and sea levels were responsible.

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多年来，又有人提出了一些其他的理论，但没有一个被科学界接受。

Over the years several other theories have been put forth, but none has been accepted by the scientific community.

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关于利他主义还有别的一些理论，但最有意思的一种认为这一切都是有亲缘关系的。

There are several other theories about altruism, but one of the more intriguing ones is that it's all relative.

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So Bohr was validated in very, very strong measure, but there were also some contrary data.

所以说波尔理论得到了强有力的证实，但其实也存在一些反面数据。

麻省理工公开课 - 固态化学导论课程节选

We're going to be thinking about that in connection with Financial Theory, but we have to get into the details; so we are going to be-- we are going to be learning about facts.

我们会学到,它和金融理论之间的联系,但我们还会学到一些细节内容,所以我们将要...,我们会学习一些实例

耶鲁公开课 - 金融市场课程节选