既然因为我们已经有了睡眠的进化压力，进化理论说明，大脑就进化到明智使用睡眠时间来处理前一天获得的信息：白天获取，夜晚处理。

And because we already had evolutionary pressure to sleep, the theory goes, the brain evolved to use that time wisely by processing information from the previous day: acquire by day; process by night.

youdao

有一天晚上，他被教堂的钟声唤醒，钟声在夜晚时分显得格外洪亮。

One night the sweeper was awakened from his dreams by the sound of the parish bells ringing out loudly in the darkness.

youdao

我知道我曾有过无数个夜晚躺在床上思考着一天当中的每个细小的但是使我感到有压力的事情（我可不可说这是一种通病？）

I know I’ve spent many a night lying in bed thinking (or should I say obsessing?) over every tiny, stressful detail of my day.

youdao