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【站僕】摩檸Morning.

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2016/10/12

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Sharon

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2020/05/15

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⑴ If you want people to use less energy, you could make it very expensive, or you could just let them know how much they use in comparison with their neighbors. When that bit of information was added to electric bills in San Marcos, Calif., heavy users quickly lowered their consumption, even when no one had asked them to.

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