Power companies always keep spare capacity and will keep their turbines spinning through this unpredictable fall in demand in preparation for when people turn their lights back on again.
电力公司总是保留一些备用发电能力，而在这用电需求突然下降的一个小时中，供电公司的涡轮发电机会继续工作，为一小时后的用电新高峰做准备。
Power companies always keep spare capacity and will keep their turbines spinning through this unpredictable fall in demand in preparation for when people turn their lights back on again.
电力公司总是保留一些备用发电能力，而在这用电需求突然下降的一个小时中，供电公司的涡轮发电机会继续工作，为一小时后的用电新高峰做准备。
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