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· 英译中

原文：

Scientists are still learning about all the ways in which daylight impacts the neurotransmitters in our brain that influence how we feel, but growing evidence suggests that the change in seasons can trigger chemical changes in the brain. We know, for example, that lower levels of daylight are associated with lower levels of serotonin — the neurotransmitter that's associated with depression and mood regulation, Golden said.

Lastly, some people's brains may start preparing for the fact that winter is approaching. If they experience seasonal depression or anxiety in past years, they may get anxious that the hardest time of year for them is right around the corner, Desan explained.

译文：

科学家们仍在探究日光是如何作用于大脑中那些影响我们感受的神经递质的，但越来越多的证据表明季节变化会引发大脑中的化学变化。戈尔登说，例如，我们知道日光水平较低与血清素（serotonin）水平较低有关——而血清素是一种与抑郁和情绪调节相关的神经递质。

最后，有些人可能开始为冬天的来临做心理准备。德桑解释说，如果他们在过去几年中有过季节性抑郁或焦虑的经历，他们可能会为一年中最艰难时刻即将来临而感到焦虑。