Even if the prey had a good sensory system to notice a predator closing in, the success rate of a nocturnal attack may be higher than a diurnal attack.

即使猎物拥有很好的感知系统，注意到了食肉动物正在靠近，夜间攻击的成功率也可能比白天攻击的成功率高。

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While there are some individual differences in the circadian rhythm, where some individuals are more nocturnal than others, humans are basically a diurnal (day-living) species.

虽然在昼夜节律中，人与人具有个体差异，但人类基本上都是在白天活动的。

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Using mice as models, they learned that intense light enhances fear or anxiety in mice, which are nocturnal, in much the same way that darkness can intensify fear or anxiety in diurnal humans.

把小老鼠当做实验品，他们发现强光增强了老鼠的恐惧和焦虑，因为老鼠属于昼伏夜出的生物，同样，因为人类通常在白天活动，黑暗就增加了他们的恐惧和焦虑。

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Mice and humans are physiologically alike, so a similar effect might be expected for people, but the fact that mice are nocturnal and humans diurnal is a serious complicating factor.

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