Even when we turn off the bedside lamp and are fast asleep, electricity is working for us, driving our refrigerators, heating our water, or keeping our rooms air-conditioned.

 
  • 参考译文:即使在我们关掉了床头灯深深地进入梦乡时,电仍在为我们工作:为电冰箱提供动力,把水加热,或使室内空调机继续运转。
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