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.
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.
最后，享受您的一天，有一个美好的夜晚。
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