矛盾的是，虽然液态水所需的温度只存在于太阳系内部，但生命的关键组成部分，包括水本身，却主要存在于小行星带之外。

Paradoxically, while the temperatures required for liquid water exist only in the inner solar system, the key building blocks of life, including water itself, occur primarily beyond the asteroid belt.

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尽管物理学家已经证明了特制原子之间存在纠缠，但没人知道它是否也存在于组成人类思维的原子之间。

While physicists have demonstrated entanglement with specially prepared atoms, no-one knows if it also exists between atoms making up human minds.

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虽然这些化学物质的简单存在并不一定表明存在健康风险，但典型的美国人身上携带这些化学物质的事实让琼和他的同事感到震惊。

While the simple presence of these chemicals does not necessarily indicate a health risk, the fact that typical Americans carry these chemicals at all shocked June and his fellow participants.

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And the terms of the expression change, the parties to the conflict change, the sights change, but the controversy goes on.

也许人们对这种冲突的表述有所改变，利益双方有所改变，文化景观有所改变，但这种争议永远存在。

普林斯顿公开课 - 人性课程节选

So things can be dangerous. But generally, if you're smart, I think it's a very safe place to live.

因此，危险还是存在的。但大多数情况下，只要你精明点，我认为那儿还是一个非常安全的居住地。

在上西区 - SpeakingMax英语口语达人

So, there's no absolutes about this, this is a general response where all the features can be different with different pathogens.

这其中并没有明确的规律,免疫应答是普遍存在的,但针对不同的病原体的应答规律各不相同

耶鲁公开课 - 生物医学工程探索课程节选