很有可能你的睡眠问题是由于没有一个夜晚模式造成的。
It could be possible that your sleep problem stems from not having an evening routine.
当天黑，他会自动切换到夜晚模式激活他的大灯照亮他的路。
And when it gets dark, he automatically switches to Night Mode activating his headlights to light up his path.
在炎热夏天的夜晚有一个熟悉的景象，每个萤火虫亚种以各自特有的模式闪烁自己的“尾灯”。
A familiar sight on hot summer nights, each firefly flashes its light in a pattern unique to its subspecies.
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