We have what at first seems like a pretty attractive theory, but then, how do you explain the fact that this has happened before?

我们提出了一开始看起来很有吸引力的理论，但是接下来，你要如何解释以前也发生过这种情况呢？

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An increasingly attractive theory holds that decreases in atmospheric carbon dioxide start the cooling trend that leads to glaciation.

一个越来越有吸引力的理论认为，大气中二氧化碳的减少引发降温趋势，这趋势导致冰川作用。

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This last theory is attractive because it gives some hope of explaining the enclosed seas, such as the Sea of Japan.

最后一种理论很有吸引力，因为它给解释封闭海域（如日本海）带来了一些希望。

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According to this theory, the atoms consist of a positively charged nucleus surrounded by a stream of electrons kept together by attractive forces from the nucleus.

根据这个理论，原子由一个带正电荷的核组成,由于来自核的吸引力,电子流围绕在核的周围。

麻省理工公开课 - 固态化学导论课程节选

I don't find the fantastic container theory myself-- I don't find it particularly attractive.

我并不觉得理想容器理论-,非常有吸引力。

耶鲁公开课 - 死亡课程节选

Another design challenge is tiny foyers because, in theory, they should be as serviceable as they are attractive.

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"The theory we're working with is that people want to make their Facebook profile attractive to other people, but it turns out that they do that in very different ways, " Dr Hogan said.

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The theory is that firms would hire more staff and the change would make the UK a more attractive place to start and grow a business.

BBC: UK Politics