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为什么夜晚会有星星闪烁呢？

夜晚星星闪烁是由于大气层的折射和散射作用。当星光穿过大气层时，由于大气中存在湍流和温度变化，导致光线发生折射和散射，使得星星的亮度和位置看起来会发生变化，产生闪烁效果。

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