In fact, you might fall asleep immediately upon switching off the light.

事实上，你可能还来不及关灯就已进入了梦乡。

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As the fall of night ignites thousands of lanterns along the riverbanks and set off the sunset glow, the whole town become ablaze with light and illuminates the way home for its residents.

夜幕降临，河岸边数千盏灯笼与晚霞一并点燃，把整个小镇映衬得灯火通明，为镇民们照亮了回家的路。

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So when you use a regular light bulb for reading before bed you can throw off the levels of melatonin which in turn makes it harder to fall asleep.

如果你睡前阅读用的是普通灯泡，褪黑激素的分泌被扰乱，你就会比较难以入睡。

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