多一小时的日照时间，你不需要开灯就可以节约能源。
By having another hour of sunlight, you can save energy by not needing to turn the lights on.
他们的研究显示，我们的生理时钟，主要受日夜调节，不可能从日光节约期间，傍晚多出来的那一小时日照里获得任何好处。
Their studies show that our circadian body clocks, set by light and darkness, never benefit from gaining an "extra" hour of sunlight to the end of the day during daylight saving time.
他们的研究显示，我们的生理时钟，主要受日夜调节，不可能从日光节约期间，傍晚多出来的那一小时日照里获得任何好处。
Their studies show that our circadian body clocks, __ 8 __ by light and darkness, never benefit from gaining an "extra" hour of sunlight to the end of the day during daylight saving time.
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