他们在核武器试验过程中暴露于放射性核辐射。

They were exposed to radioactive fallout during nuclear weapons tests.

《柯林斯英汉双解大词典》

在自然环境中暴露于气味通常会持续更长的时间，并且所产生的适应性可能与短期嗅觉适应性在质量上有所不同。

Exposures to odors in natural environments often occur over far longer periods, and the resulting adaptations may differ qualitatively from short-term olfactory adaptation.

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若长期暴露于当前环境的气味中，个体对气味强度的感知会大大减弱。

With continued exposure to chronically present ambient odors, individuals' perception of odor intensity is greatly reduced.

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We're exposed to things that might cause cancer where weren't exposed to them before and so that might be a reason.

我们暴露于可能致癌的物质中,这些物质在以前是没有的,这可能就是原因之一

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